Package com.puppycrawl.tools.checkstyle.api

Class TokenTypes

java.lang.Object

com.puppycrawl.tools.checkstyle.api.TokenTypes

public final class TokenTypes
extends Object

Contains the constants for all the tokens contained in the Abstract Syntax Tree.

Implementation detail: This class has been introduced to break the circular dependency between packages.

Field Summary

Fields

Modifier and Type	Field	Description
static final int	ABSTRACT	The abstract keyword.
static final int	ANNOTATION	An annotation of a package, type, field, parameter or variable.
static final int	ANNOTATION_ARRAY_INIT	An annotation array member initialization.
static final int	ANNOTATION_DEF	An annotation declaration.
static final int	ANNOTATION_FIELD_DEF	An annotation field declaration.
static final int	ANNOTATION_MEMBER_VALUE_PAIR	An initialization of an annotation member with a value.
static final int	ANNOTATIONS	A collection of annotations on a package or enum constant.
static final int	ARRAY_DECLARATOR	An array declaration.
static final int	ARRAY_INIT	An array initialization.
static final int	ASSIGN	The = (assignment) operator.
static final int	AT	An @ symbol - signifying an annotation instance or the prefix to the interface literal signifying the definition of an annotation declaration.
static final int	BAND	The & (bitwise AND) operator.
static final int	BAND_ASSIGN	The &= (bitwise AND assignment) operator.
static final int	BLOCK_COMMENT_BEGIN	Beginning of block comment: '/*'.
static final int	BLOCK_COMMENT_END	End of block comment: '*/'.
static final int	BNOT	The ~ (bitwise complement) operator.
static final int	BOR	The | (bitwise OR) operator.
static final int	BOR_ASSIGN	The |= (bitwise OR assignment) operator.
static final int	BSR	The >>> (unsigned shift right) operator.
static final int	BSR_ASSIGN	The >>>= (unsigned right shift assignment) operator.
static final int	BXOR	The ^ (bitwise exclusive OR) operator.
static final int	BXOR_ASSIGN	The ^= (bitwise exclusive OR assignment) operator.
static final int	CASE_GROUP	A group of case clauses.
static final int	CHAR_LITERAL	A character literal.
static final int	CLASS_DEF	A class declaration.
static final int	COLON	The : (colon) operator.
static final int	COMMA	The , (comma) operator.
static final int	COMMENT_CONTENT	Text of single-line or block comment.
static final int	COMPACT_CTOR_DEF	A compact canonical constructor eliminates the list of formal parameters; they are declared implicitly.
static final int	COMPILATION_UNIT	This is the root node for the source file.
static final int	CTOR_CALL	A constructor call.
static final int	CTOR_DEF	A constructor declaration.
static final int	DEC	The -- (prefix decrement) operator.
static final int	DIV	The / (division) operator.
static final int	DIV_ASSIGN	The /= (division assignment) operator.
static final int	DO_WHILE	Literal while in do-while loop.
static final int	DOT	The . (dot) operator.
static final int	DOUBLE_COLON	The :: (double colon) separator.
static final int	ELIST	An expression list.
static final int	ELLIPSIS	A triple dot for variable-length parameters.
static final int	EMPTY_STAT	The empty statement.
static final int	ENUM	The enum keyword.
static final int	ENUM_CONSTANT_DEF	An enum constant declaration.
static final int	ENUM_DEF	An enum declaration.
static final int	EQUAL	The == (equal) operator.
static final int	EXPR	An expression.
static final int	EXTENDS_CLAUSE	An extends clause.
static final int	FINAL	The final keyword.
static final int	FOR_CONDITION	A for loop condition.
static final int	FOR_EACH_CLAUSE	A for-each clause.
static final int	FOR_INIT	A for loop initializer.
static final int	FOR_ITERATOR	A for loop iterator.
static final int	GE	The >= (greater than or equal) operator.
static final int	GENERIC_END	A > symbol signifying the end of type arguments or type parameters.
static final int	GENERIC_START	A < symbol signifying the start of type arguments or type parameters.
static final int	GT	The > (greater than) operator.
static final int	IDENT	An identifier.
static final int	IMPLEMENTS_CLAUSE	An implements clause.
static final int	IMPORT	An import declaration.
static final int	INC	The ++ (prefix increment) operator.
static final int	INDEX_OP	The array index operator.
static final int	INSTANCE_INIT	An instance initializer.
static final int	INTERFACE_DEF	An interface declaration.
static final int	LABELED_STAT	A labeled statement.
static final int	LAMBDA	Special lambda symbol ->.
static final int	LAND	The && (conditional AND) operator.
static final int	LCURLY	A left curly brace ({).
static final int	LE	The <= (less than or equal) operator.
static final int	LITERAL_ASSERT	The assert keyword.
static final int	LITERAL_BOOLEAN	The boolean keyword.
static final int	LITERAL_BREAK	The break keyword.
static final int	LITERAL_BYTE	The byte keyword.
static final int	LITERAL_CASE	The case keyword.
static final int	LITERAL_CATCH	The catch keyword.
static final int	LITERAL_CHAR	The char keyword.
static final int	LITERAL_CLASS	The class keyword.
static final int	LITERAL_CONTINUE	The continue keyword.
static final int	LITERAL_DEFAULT	The default keyword.
static final int	LITERAL_DO	The do keyword.
static final int	LITERAL_DOUBLE	The double keyword.
static final int	LITERAL_ELSE	The else keyword.
static final int	LITERAL_FALSE	The false keyword.
static final int	LITERAL_FINALLY	The finally keyword.
static final int	LITERAL_FLOAT	The float keyword.
static final int	LITERAL_FOR	The for keyword.
static final int	LITERAL_IF	The if keyword.
static final int	LITERAL_INSTANCEOF	The instanceof operator.
static final int	LITERAL_INT	The int keyword.
static final int	LITERAL_INTERFACE	The interface keyword.
static final int	LITERAL_LONG	The long keyword.
static final int	LITERAL_NATIVE	The native keyword.
static final int	LITERAL_NEW	The new keyword.
static final int	LITERAL_NON_SEALED	The non-sealed keyword.
static final int	LITERAL_NULL	The null keyword.
static final int	LITERAL_PERMITS	The permits restricted identifier.
static final int	LITERAL_PRIVATE	The private keyword.
static final int	LITERAL_PROTECTED	The protected keyword.
static final int	LITERAL_PUBLIC	The public keyword.
static final int	LITERAL_RECORD	The record keyword.
static final int	LITERAL_RETURN	The return keyword.
static final int	LITERAL_SEALED	The sealed restricted identifier.
static final int	LITERAL_SHORT	The short keyword.
static final int	LITERAL_STATIC	The static keyword.
static final int	LITERAL_SUPER	The super keyword.
static final int	LITERAL_SWITCH	The switch keyword.
static final int	LITERAL_SYNCHRONIZED	The synchronized keyword.
static final int	LITERAL_THIS	The this keyword use to refer the current object.
static final int	LITERAL_THROW	The throw keyword.
static final int	LITERAL_THROWS	The throws keyword.
static final int	LITERAL_TRANSIENT	The transient keyword.
static final int	LITERAL_TRUE	The true keyword.
static final int	LITERAL_TRY	The try keyword.
static final int	LITERAL_VOID	The void keyword.
static final int	LITERAL_VOLATILE	The volatile keyword.
static final int	LITERAL_WHEN	A when clause.
static final int	LITERAL_WHILE	The while keyword.
static final int	LITERAL_YIELD	The yield keyword.
static final int	LNOT	The ! (logical complement) operator.
static final int	LOR	The || (conditional OR) operator.
static final int	LPAREN	A left parenthesis (().
static final int	LT	The < (less than) operator.
static final int	METHOD_CALL	A method call.
static final int	METHOD_DEF	A method declaration.
static final int	METHOD_REF	A reference to a method or constructor without arguments.
static final int	MINUS	The - (subtraction) operator.
static final int	MINUS_ASSIGN	The -= (subtraction assignment) operator.
static final int	MOD	The % (remainder) operator.
static final int	MOD_ASSIGN	The %= (remainder assignment) operator.
static final int	MODIFIERS	Modifiers for type, method, and field declarations.
static final int	NOT_EQUAL	The != (not equal) operator.
static final int	NUM_DOUBLE	A double precision floating point literal.
static final int	NUM_FLOAT	A single precision floating point literal.
static final int	NUM_INT	An integer literal.
static final int	NUM_LONG	A long integer literal.
static final int	OBJBLOCK	An object block.
static final int	PACKAGE_DEF	The package declaration.
static final int	PARAMETER_DEF	A parameter declaration.
static final int	PARAMETERS	A list of parameters to a method or constructor.
static final int	PATTERN_DEF	A pattern definition, excluding simple type pattern (pattern variable) definition such as if (o instanceof Integer i){}.
static final int	PATTERN_VARIABLE_DEF	A pattern variable definition; when conditionally matched, this variable is assigned with the defined type.
static final int	PERMITS_CLAUSE	A permits clause.
static final int	PLUS	The + (addition) operator.
static final int	PLUS_ASSIGN	The += (addition assignment) operator.
static final int	POST_DEC	The -- (postfix decrement) operator.
static final int	POST_INC	The ++ (postfix increment) operator.
static final int	QUESTION	The ? (conditional) operator.
static final int	RBRACK	The ] symbol.
static final int	RCURLY	A right curly brace (}).
static final int	RECORD_COMPONENT_DEF	A record component is a variable that comprises the state of a record.
static final int	RECORD_COMPONENTS	Record components are a (possibly empty) list containing the components of a record, which are the variables that make up its state.
static final int	RECORD_DEF	A declaration of a record specifies a name, a header, and a body.
static final int	RECORD_PATTERN_COMPONENTS	A (possibly empty) record component pattern list which is used to match against the corresponding record components.
static final int	RECORD_PATTERN_DEF	A record pattern definition.
static final int	RESOURCE	A resource in the Java 7 try-with-resources construct.
static final int	RESOURCE_SPECIFICATION	The Java 7 try-with-resources construct.
static final int	RESOURCES	A list of resources in the Java 7 try-with-resources construct.
static final int	RPAREN	A right parenthesis ()).
static final int	SEMI	The statement terminator (;).
static final int	SINGLE_LINE_COMMENT	Beginning of single-line comment: '//'.
static final int	SL	The << (shift left) operator.
static final int	SL_ASSIGN	The <<= (left shift assignment) operator.
static final int	SLIST	A list of statements.
static final int	SR	The >> (signed shift right) operator.
static final int	SR_ASSIGN	The >>= (signed right shift assignment) operator.
static final int	STAR	The * (multiplication or wildcard) operator.
static final int	STAR_ASSIGN	The *= (multiplication assignment) operator.
static final int	STATIC_IMPORT	A static import declaration.
static final int	STATIC_INIT	A static initialization block.
static final int	STRICTFP	The strictfp keyword.
static final int	STRING_LITERAL	A string literal.
static final int	SUPER_CTOR_CALL	A super constructor call.
static final int	SWITCH_RULE	Switch Expressions.
static final int	TEXT_BLOCK_CONTENT	Content of a Java 15 text block.
static final int	TEXT_BLOCK_LITERAL_BEGIN	Text blocks are a new feature added to to Java SE 15 and later that will make writing multi-line strings much easier and cleaner.
static final int	TEXT_BLOCK_LITERAL_END	End of a Java 15 text block literal, delimited by three double quotes.
static final int	TYPE	A type.
static final int	TYPE_ARGUMENT	A type arguments to a type reference or a method/ctor invocation.
static final int	TYPE_ARGUMENTS	A list of type arguments to a type reference or a method/ctor invocation.
static final int	TYPE_EXTENSION_AND	The & symbol when used to extend a generic upper or lower bounds constrain or a type cast expression with an additional interface.
static final int	TYPE_LOWER_BOUNDS	A lower bounds on a wildcard type argument.
static final int	TYPE_PARAMETER	A type parameter to a class, interface or method definition.
static final int	TYPE_PARAMETERS	A list of type parameters to a class, interface or method definition.
static final int	TYPE_UPPER_BOUNDS	An upper bounds on a wildcard type argument or type parameter.
static final int	TYPECAST	A type-cast.
static final int	UNARY_MINUS	The - (unary minus) operator.
static final int	UNARY_PLUS	The + (unary plus) operator.
static final int	UNNAMED_PATTERN_DEF	An unnamed pattern variable definition.
static final int	VARIABLE_DEF	A field or local variable declaration.
static final int	WILDCARD_TYPE	The type that refers to all types.

Constructor Summary

Constructors

Modifier	Constructor	Description
private	TokenTypes()	Prevent instantiation.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

COMPILATION_UNIT

public static final int COMPILATION_UNIT

This is the root node for the source file. It's children are an optional package definition, zero or more import statements, and zero or more type declarations.

For example:

 import java.util.List;

 class MyClass{}
 interface MyInterface{}
 ;
 

parses as:

 COMPILATION_UNIT -> COMPILATION_UNIT
 |--IMPORT -> import
 |   |--DOT -> .
 |   |   |--DOT -> .
 |   |   |   |--IDENT -> java
 |   |   |   `--IDENT -> util
 |   |   `--IDENT -> List
 |   `--SEMI -> ;
 |--CLASS_DEF -> CLASS_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_CLASS -> class
 |   |--IDENT -> MyClass
 |   `--OBJBLOCK -> OBJBLOCK
 |       |--LCURLY -> {
 |       `--RCURLY -> }
 |--INTERFACE_DEF -> INTERFACE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_INTERFACE -> interface
 |   |--IDENT -> MyInterface
 |   `--OBJBLOCK -> OBJBLOCK
 |       |--LCURLY -> {
 |       `--RCURLY -> }
 `--SEMI -> ;
 

See Also:

• PACKAGE_DEF
• IMPORT
• CLASS_DEF
• INTERFACE_DEF
• RECORD_DEF
• ANNOTATION_DEF
• ENUM_DEF
• Constant Field Values

MODIFIERS

public static final int MODIFIERS

Modifiers for type, method, and field declarations. The modifiers element is always present even though it may have no children.

For example:

 public int x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• Java Language Specification, §8
• LITERAL_PUBLIC
• LITERAL_PROTECTED
• LITERAL_PRIVATE
• ABSTRACT
• LITERAL_STATIC
• FINAL
• LITERAL_TRANSIENT
• LITERAL_VOLATILE
• LITERAL_SYNCHRONIZED
• LITERAL_NATIVE
• STRICTFP
• ANNOTATION
• LITERAL_DEFAULT
• Constant Field Values

OBJBLOCK

public static final int OBJBLOCK

An object block. These are children of class, interface, enum, annotation and enum constant declarations. Also, object blocks are children of the new keyword when defining anonymous inner types.

For example:

 class Test {}
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |--LITERAL_CLASS -> class
 |--IDENT -> Test
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• LCURLY
• INSTANCE_INIT
• STATIC_INIT
• CLASS_DEF
• CTOR_DEF
• METHOD_DEF
• VARIABLE_DEF
• RCURLY
• INTERFACE_DEF
• LITERAL_NEW
• ENUM_DEF
• ENUM_CONSTANT_DEF
• ANNOTATION_DEF
• Constant Field Values

SLIST

public static final int SLIST

A list of statements.

For example:

 if (c == 1) {
     c = 0;
 }
 

parses as:

 LITERAL_IF -> if
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--EQUAL -> ==
  |       |--IDENT -> c
  |       `--NUM_INT -> 1
  |--RPAREN -> )
  `--SLIST -> {
      |--EXPR -> EXPR
      |   `--ASSIGN -> =
      |       |--IDENT -> c
      |       `--NUM_INT -> 0
      |--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• RCURLY
• EXPR
• LABELED_STAT
• LITERAL_THROWS
• LITERAL_RETURN
• SEMI
• METHOD_DEF
• CTOR_DEF
• LITERAL_FOR
• LITERAL_WHILE
• LITERAL_IF
• LITERAL_ELSE
• CASE_GROUP
• Constant Field Values

CTOR_DEF

public static final int CTOR_DEF

A constructor declaration.

For example:

 public SpecialEntry(int value, String text)
 {
   this.value = value;
   this.text = text;
 }
 

parses as:

 CTOR_DEF -> CTOR_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--IDENT -> SpecialEntry
  |--LPAREN -> (
  |--PARAMETERS -> PARAMETERS
  |   |--PARAMETER_DEF -> PARAMETER_DEF
  |   |   |--MODIFIERS -> MODIFIERS
  |   |   |--TYPE -> TYPE
  |   |   |   `--LITERAL_INT -> int
  |   |   `--IDENT -> value
  |   |--COMMA -> ,
  |   `--PARAMETER_DEF -> PARAMETER_DEF
  |       |--MODIFIERS -> MODIFIERS
  |       |--TYPE -> TYPE
  |       |   `--IDENT -> String
  |       `--IDENT -> text
  |--RPAREN -> )
  `--SLIST -> {
      |--EXPR -> EXPR
      |   `--ASSIGN -> =
      |       |--DOT -> .
      |   |--LITERAL_THIS -> this
      |       |   `--IDENT -> value
      |       `--IDENT -> value
      |--SEMI -> ;
      |--EXPR -> EXPR
      |   `--ASSIGN -> =
      |       |--DOT -> .
      |       |   |--LITERAL_THIS -> this
      |       |   `--IDENT -> text
      |       `--IDENT -> text
      |--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• OBJBLOCK
• CLASS_DEF
• Constant Field Values

METHOD_DEF

public static final int METHOD_DEF

A method declaration. The children are modifiers, type parameters, return type, method name, parameter list, an optional throws list, and statement list. The statement list is omitted if the method declaration appears in an interface declaration. Method declarations may appear inside object blocks of class declarations, interface declarations, enum declarations, enum constant declarations or anonymous inner-class declarations.

For example:

  public static int square(int x)
  {
    return x*x;
  }
 

parses as:

 --METHOD_DEF -> METHOD_DEF
    |--MODIFIERS -> MODIFIERS
    |   |--LITERAL_PUBLIC -> public
    |   `--LITERAL_STATIC -> static
    |--TYPE -> TYPE
    |   `--LITERAL_INT -> int
    |--IDENT -> square
    |--LPAREN -> (
    |--PARAMETERS -> PARAMETERS
    |   `--PARAMETER_DEF -> PARAMETER_DEF
    |       |--MODIFIERS -> MODIFIERS
    |       |--TYPE -> TYPE
    |       |   `--LITERAL_INT -> int
    |       `--IDENT -> x
    |--RPAREN -> )
    `--SLIST -> {
        |--LITERAL_RETURN -> return
        |   |--EXPR -> EXPR
        |   |   `--STAR -> *
        |   |       |--IDENT -> x
        |   |       `--IDENT -> x
        |   `--SEMI -> ;
        `--RCURLY -> }
 

See Also:

• MODIFIERS
• TYPE_PARAMETERS
• TYPE
• IDENT
• PARAMETERS
• LITERAL_THROWS
• SLIST
• OBJBLOCK
• Constant Field Values

VARIABLE_DEF

public static final int VARIABLE_DEF

A field or local variable declaration. The children are modifiers, type, the identifier name, and an optional assignment statement.

For example:

 final double PI = 3.14;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--FINAL -> final
  |--TYPE -> TYPE
  |   `--LITERAL_DOUBLE -> int
  |--IDENT -> PI
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--NUM_FLOAT -> 3.14
  `--SEMI -> ;
 

See Also:

• MODIFIERS
• TYPE
• IDENT
• ASSIGN
• Constant Field Values

INSTANCE_INIT

public static final int INSTANCE_INIT

An instance initializer. Zero or more instance initializers may appear in class and enum definitions. This token will be a child of the object block of the declaring type.

For example:

 public class MyClass {
     private int foo;
     {foo = 10;}
 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--LITERAL_CLASS -> class
  |--IDENT -> MyClass
  `--OBJBLOCK -> OBJBLOCK
      |--LCURLY -> {
      |--VARIABLE_DEF -> VARIABLE_DEF
      |   |--MODIFIERS -> MODIFIERS
      |   |   `--LITERAL_PRIVATE -> private
      |   |--TYPE -> TYPE
      |   |   `--LITERAL_INT -> int
      |   |--IDENT -> foo
      |   `--SEMI -> ;
      |--INSTANCE_INIT -> INSTANCE_INIT
      |   `--SLIST -> {
      |       |--EXPR -> EXPR
      |       |   `--ASSIGN -> =
      |       |       |--IDENT -> foo
      |       |       `--NUM_INT -> 10
      |       |--SEMI -> ;
      |       `--RCURLY -> }
      `--RCURLY -> }
 

See Also:

• Java Language Specification§8.6
• SLIST
• OBJBLOCK
• Constant Field Values

STATIC_INIT

public static final int STATIC_INIT

A static initialization block. Zero or more static initializers may be children of the object block of a class or enum declaration (interfaces cannot have static initializers). The first and only child is a statement list.

For Example:

 static {
   num = 10;
 }
 

parses as:

 STATIC_INIT -> STATIC_INIT
  `--SLIST -> {
      |--EXPR -> EXPR
      |   `--ASSIGN -> =
      |       |--IDENT -> num
      |       `--NUM_INT -> 10
      |--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• Java Language Specification, §8.7
• SLIST
• OBJBLOCK
• Constant Field Values

TYPE

public static final int TYPE

A type. This is either a return type of a method or a type of a variable or field. The first child of this element is the actual type. This may be a primitive type, an identifier, a dot which is the root of a fully qualified type, or an array of any of these. The second child may be type arguments to the type.

For example:

boolean var = true;

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_BOOLEAN -> boolean
 |   |--IDENT -> var
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--LITERAL_TRUE -> true
 |--SEMI -> ;
 

See Also:

• VARIABLE_DEF
• METHOD_DEF
• PARAMETER_DEF
• IDENT
• DOT
• LITERAL_VOID
• LITERAL_BOOLEAN
• LITERAL_BYTE
• LITERAL_CHAR
• LITERAL_SHORT
• LITERAL_INT
• LITERAL_FLOAT
• LITERAL_LONG
• LITERAL_DOUBLE
• ARRAY_DECLARATOR
• TYPE_ARGUMENTS
• Constant Field Values

CLASS_DEF

public static final int CLASS_DEF

A class declaration.

For example:

 public class Test {
 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_CLASS -> class
 |--IDENT -> Test
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• Java Language Specification, §8
• MODIFIERS
• IDENT
• EXTENDS_CLAUSE
• IMPLEMENTS_CLAUSE
• OBJBLOCK
• LITERAL_NEW
• Constant Field Values

INTERFACE_DEF

public static final int INTERFACE_DEF

An interface declaration.

For example:

 public interface MyInterface {

 }
 

parses as:

 INTERFACE_DEF -> INTERFACE_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_INTERFACE -> interface
 |--IDENT -> MyInterface
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• Java Language Specification, §9
• MODIFIERS
• IDENT
• EXTENDS_CLAUSE
• OBJBLOCK
• Constant Field Values

PACKAGE_DEF

public static final int PACKAGE_DEF

The package declaration. This is optional, but if it is included, then there is only one package declaration per source file and it must be the first non-comment in the file. A package declaration may be annotated in which case the annotations comes before the rest of the declaration (and are the first children).

For example:

   package com.puppycrawl.tools.checkstyle.api;
 

parses as:

 PACKAGE_DEF -> package
 |--ANNOTATIONS -> ANNOTATIONS
 |--DOT -> .
 |   |--DOT -> .
 |   |   |--DOT -> .
 |   |   |   |--DOT -> .
 |   |   |   |   |--IDENT -> com
 |   |   |   |   `--IDENT -> puppycrawl
 |   |   |   `--IDENT -> tools
 |   |   `--IDENT -> checkstyle
 |   `--IDENT -> api
 `--SEMI -> ;
 

See Also:

• Java Language Specification §7.4
• DOT
• IDENT
• SEMI
• ANNOTATIONS
• FullIdent
• Constant Field Values

ARRAY_DECLARATOR

public static final int ARRAY_DECLARATOR

An array declaration.

If the array declaration represents a type, then the type of the array elements is the first child. Multidimensional arrays may be regarded as arrays of arrays. In other words, the first child of the array declaration is another array declaration.

For example:

   int[] x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--LITERAL_INT -> int
  |   `--ARRAY_DECLARATOR -> [
  |       `--RBRACK -> ]
  |--IDENT -> x
  `--SEMI -> ;
 

The array declaration may also represent an inline array definition. In this case, the first child will be either an expression specifying the length of the array or an array initialization block.

See Also:

• Java Language Specification §10
• TYPE
• ARRAY_INIT
• Constant Field Values

EXTENDS_CLAUSE

public static final int EXTENDS_CLAUSE

An extends clause. This appears as part of class and interface definitions. This element appears even if the extends keyword is not explicitly used. The child is an optional identifier.

For example:

 public class Test extends ArrayList {
 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_CLASS -> class
 |--IDENT -> Test
 |--EXTENDS_CLAUSE -> extends
 |   `--IDENT -> ArrayList
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• IDENT
• DOT
• CLASS_DEF
• INTERFACE_DEF
• FullIdent
• Constant Field Values

IMPLEMENTS_CLAUSE

public static final int IMPLEMENTS_CLAUSE

An implements clause. This always appears in a class or enum declaration, even if there are no implemented interfaces. The children are a comma separated list of zero or more identifiers.

For example:

 public class MyClass implements Collection {

 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_CLASS -> class
 |--IDENT -> MyClass
 |--IMPLEMENTS_CLAUSE -> implements
 |   `--IDENT -> Collection
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• IDENT
• DOT
• COMMA
• CLASS_DEF
• ENUM_DEF
• Constant Field Values

PARAMETERS

public static final int PARAMETERS

A list of parameters to a method or constructor. The children are zero or more parameter declarations separated by commas.

For example

 int start, int end
 

parses as:

 PARAMETERS -> PARAMETERS
  |--PARAMETER_DEF -> PARAMETER_DEF
  |   |--MODIFIERS -> MODIFIERS
  |   |--TYPE -> TYPE
  |   |   `--LITERAL_INT -> int
  |   `--IDENT -> start
  |--COMMA -> ,
  `--PARAMETER_DEF -> PARAMETER_DEF
      |--MODIFIERS -> MODIFIERS
      |--TYPE -> TYPE
      |   `--LITERAL_INT -> int
      `--IDENT -> end
 

See Also:

• PARAMETER_DEF
• COMMA
• METHOD_DEF
• CTOR_DEF
• Constant Field Values

PARAMETER_DEF

public static final int PARAMETER_DEF

A parameter declaration. The last parameter in a list of parameters may be variable length (indicated by the ELLIPSIS child node immediately after the TYPE child).

For example

      void foo(SomeType SomeType.this, int firstParameter, int... secondParameter) {}
 

parses as:

 METHOD_DEF -> METHOD_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_VOID -> void
  |--IDENT -> foo
  |--LPAREN -> (
  |--PARAMETERS -> PARAMETERS
  |   |--PARAMETER_DEF -> PARAMETER_DEF
  |   |   |--MODIFIERS -> MODIFIERS
  |   |   |--TYPE -> TYPE
  |   |   |   `--IDENT -> SomeType
  |   |   `--DOT -> .
  |   |       |--IDENT -> SomeType
  |   |       `--LITERAL_THIS -> this
  |   |--COMMA -> ,
  |   |--PARAMETER_DEF -> PARAMETER_DEF
  |   |   |--MODIFIERS -> MODIFIERS
  |   |   |--TYPE -> TYPE
  |   |   |   `--LITERAL_INT -> int
  |   |   `--IDENT -> firstParameter
  |   |--COMMA -> ,
  |   `--PARAMETER_DEF -> PARAMETER_DEF
  |       |--MODIFIERS -> MODIFIERS
  |       |--TYPE -> TYPE
  |       |   `--LITERAL_INT -> int
  |       |--ELLIPSIS -> ...
  |       `--IDENT -> secondParameter
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }

 

See Also:

• MODIFIERS
• TYPE
• IDENT
• PARAMETERS
• ELLIPSIS
• Constant Field Values

LABELED_STAT

public static final int LABELED_STAT

A labeled statement.

For example:

 outer:
 while (i < 10) {
     if (i == 5)
         continue outer;
     i++;
 }
 

parses as:

 LABELED_STAT -> :
  |--IDENT -> outer
  `--LITERAL_WHILE -> while
      |--LPAREN -> (
      |--EXPR -> EXPR
      |   `--LT -> <
      |       |--IDENT -> i
      |       `--NUM_INT -> 10
      |--RPAREN -> )
      `--SLIST -> {
          |--LITERAL_IF -> if
          |   |--LPAREN -> (
          |   |--EXPR -> EXPR
          |   |   `--EQUAL -> ==
          |   |       |--IDENT -> i
          |   |       `--NUM_INT -> 5
          |   |--RPAREN -> )
          |   `--LITERAL_CONTINUE -> continue
          |       |--IDENT -> outer
          |       `--SEMI -> ;
          |--EXPR -> EXPR
          |   `--POST_INC -> ++
          |       `--IDENT -> i
          |--SEMI -> ;
          `--RCURLY -> }
 

See Also:

• Java Language Specification, §14.7
• SLIST
• Constant Field Values

TYPECAST

public static final int TYPECAST

A type-cast.

For example:

 (String)it.next()
 

parses as:

 `--TYPECAST -> (
     |--TYPE -> TYPE
     |   `--IDENT -> String
     |--RPAREN -> )
     `--METHOD_CALL -> (
         |--DOT -> .
         |   |--IDENT -> it
         |   `--IDENT -> next
         |--ELIST -> ELIST
         `--RPAREN -> )
 

See Also:

• Java Language Specification, §15.16
• EXPR
• TYPE
• TYPE_ARGUMENTS
• RPAREN
• Constant Field Values

INDEX_OP

public static final int INDEX_OP

The array index operator.

For example:

 arr[0] = 10;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--INDEX_OP -> [
 |       |   |--IDENT -> arr
 |       |   |--EXPR -> EXPR
 |       |   |   `--NUM_INT -> 0
 |       |   `--RBRACK -> ]
 |       `--NUM_INT -> 10
 |--SEMI -> ;
 

See Also:

• EXPR
• Constant Field Values

POST_INC

public static final int POST_INC

The ++ (postfix increment) operator.

For example:

 a++;
 

parses as:

 |--EXPR -> EXPR
 |   `--POST_INC -> ++
 |       `--IDENT -> a
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.14.1
• EXPR
• INC
• Constant Field Values

POST_DEC

public static final int POST_DEC

The -- (postfix decrement) operator.

For example:

 a--;
 

parses as:

 |--EXPR -> EXPR
 |   `--POST_DEC -> --
 |       `--IDENT -> a
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.14.2
• EXPR
• DEC
• Constant Field Values

METHOD_CALL

public static final int METHOD_CALL

A method call. A method call may have type arguments however these are attached to the appropriate node in the qualified method name.

For example:

 Integer.parseInt("123");
 

parses as:

 |--EXPR -> EXPR
 |   `--METHOD_CALL -> (
 |       |--DOT -> .
 |       |   |--IDENT -> Integer
 |       |   `--IDENT -> parseInt
 |       |--ELIST -> ELIST
 |       |   `--EXPR -> EXPR
 |       |       `--STRING_LITERAL -> "123"
 |       `--RPAREN -> )
 |--SEMI -> ;
 

See Also:

• IDENT
• TYPE_ARGUMENTS
• DOT
• ELIST
• RPAREN
• FullIdent
• Constant Field Values

METHOD_REF

public static final int METHOD_REF

A reference to a method or constructor without arguments. Part of Java 8 syntax. The token should be used for subscribing for double colon literal. DOUBLE_COLON token does not appear in the tree.

For example:

 Comparator<String> compare = String::compareToIgnoreCase;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   |--IDENT -> Comparator
 |   |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
 |   |       |--GENERIC_START -> <
 |   |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
 |   |       |   `--IDENT -> String
 |   |       `--GENERIC_END -> >
 |   |--IDENT -> compare
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--METHOD_REF -> ::
 |               |--IDENT -> String
 |               `--IDENT -> compareToIgnoreCase
 |--SEMI -> ;
 

See Also:

• IDENT
• DOUBLE_COLON
• Constant Field Values

EXPR

public static final int EXPR

An expression. Operators with lower precedence appear at a higher level in the tree than operators with higher precedence. Parentheses are siblings to the operator they enclose.

For example:

 int x = 4 + 2 * (5 % 3) + (1 << 3) - 4 * 5;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_INT -> int
 |   |--IDENT -> x
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--MINUS -> -
 |               |--PLUS -> +
 |               |   |--PLUS -> +
 |               |   |   |--NUM_INT -> 4
 |               |   |   `--STAR -> *
 |               |   |       |--NUM_INT -> 2
 |               |   |       |--LPAREN -> (
 |               |   |       |--MOD -> %
 |               |   |       |   |--NUM_INT -> 5
 |               |   |       |   `--NUM_INT -> 3
 |               |   |       `--RPAREN -> )
 |               |   |--LPAREN -> (
 |               |   |--SL -> <<
 |               |   |   |--NUM_INT -> 1
 |               |   |   `--NUM_INT -> 3
 |               |   `--RPAREN -> )
 |               `--STAR -> *
 |                   |--NUM_INT -> 4
 |                   `--NUM_INT -> 5
 |--SEMI -> ;
 

See Also:

• ELIST
• ASSIGN
• LPAREN
• RPAREN
• Constant Field Values

ARRAY_INIT

public static final int ARRAY_INIT

An array initialization. This may occur as part of an array declaration or inline with new.

For example:

   int[] y =
     {
       1,
       2,
     };
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--LITERAL_INT -> int
  |   `--ARRAY_DECLARATOR -> [
  |       `--RBRACK -> ]
  |--IDENT -> y
  |--ASSIGN -> =
  |   `--ARRAY_INIT -> {
  |       |--EXPR -> EXPR
  |       |   `--NUM_INT -> 1
  |       |--COMMA -> ,
  |       |--EXPR -> EXPR
  |       |   `--NUM_INT -> 2
  |       |--COMMA -> ,
  |       `--RCURLY -> }
  `--SEMI -> ;
 

Also consider:

   int[] z = new int[]
     {
       1,
       2,
     };
 

which parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE [2:4]
  |   |--LITERAL_INT -> int
  |   `--ARRAY_DECLARATOR -> [
  |       `--RBRACK -> ]
  |--IDENT -> z
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--LITERAL_NEW -> new
  |           |--LITERAL_INT -> int
  |           |--ARRAY_DECLARATOR -> [
  |           |   `--RBRACK -> ]
  |           `--ARRAY_INIT -> {
  |               |--EXPR -> EXPR
  |               |   `--NUM_INT -> 1
  |               |--COMMA -> ,
  |               |--EXPR -> EXPR
  |               |   `--NUM_INT -> 2
  |               |--COMMA -> ,
  |               `--RCURLY -> }
  `--SEMI -> ;
 

See Also:

• ARRAY_DECLARATOR
• TYPE
• LITERAL_NEW
• COMMA
• Constant Field Values

IMPORT

public static final int IMPORT

An import declaration. Import declarations are option, but must appear after the package declaration and before the first type declaration.

For example:

   import java.io.IOException;
 

parses as:

 IMPORT -> import
 |--DOT -> .
 |   |--DOT -> .
 |   |   |--IDENT -> java
 |   |   `--IDENT -> io
 |   `--IDENT -> IOException
 `--SEMI -> ;
 

See Also:

• Java Language Specification §7.5
• DOT
• IDENT
• STAR
• SEMI
• FullIdent
• Constant Field Values

UNARY_MINUS

public static final int UNARY_MINUS

The - (unary minus) operator.

For example:

 a = -b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--UNARY_MINUS -> -
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.15.4
• EXPR
• Constant Field Values

UNARY_PLUS

public static final int UNARY_PLUS

The + (unary plus) operator.

For example:

 a = + b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--UNARY_PLUS -> +
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.15.3
• EXPR
• Constant Field Values

CASE_GROUP

public static final int CASE_GROUP

A group of case clauses. Case clauses with no associated statements are grouped together into a case group. The last child is a statement list containing the statements to execute upon a match.

For example:

 case 0:
 case 1:
 case 2:
   x = 3;
   break;
 

parses as:

 CASE_GROUP -> CASE_GROUP
  |--LITERAL_CASE -> case
  |   |--EXPR -> EXPR
  |   |   `--NUM_INT -> 0
  |   `--COLON -> :
  |--LITERAL_CASE -> case
  |   |--EXPR -> EXPR
  |   |   `--NUM_INT -> 1
  |   `--COLON -> :
  |--LITERAL_CASE -> case
  |   |--EXPR -> EXPR
  |   |   `--NUM_INT -> 2
  |   `--COLON -> :
  `--SLIST -> SLIST
      |--EXPR -> EXPR
      |   `--ASSIGN -> =
      |       |--IDENT -> x
      |       `--NUM_INT -> 3
      |--SEMI -> ;
      `--LITERAL_BREAK -> break
          `--SEMI -> ;
 

See Also:

• LITERAL_CASE
• LITERAL_DEFAULT
• LITERAL_SWITCH
• LITERAL_YIELD
• Constant Field Values

ELIST

public static final int ELIST

An expression list. The children are a comma separated list of expressions.

For example:

 new ArrayList(50);
 

parses as:

 |--EXPR -> EXPR
 |   `--LITERAL_NEW -> new
 |       |--IDENT -> ArrayList
 |       |--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
 |       |   |--GENERIC_START -> <
 |       |   `--GENERIC_END -> >
 |       |--LPAREN -> (
 |       |--ELIST -> ELIST
 |       |   `--EXPR -> EXPR
 |       |       `--NUM_INT -> 50
 |       `--RPAREN -> )
 |--SEMI -> ;
 

See Also:

• LITERAL_NEW
• FOR_INIT
• FOR_ITERATOR
• EXPR
• METHOD_CALL
• CTOR_CALL
• SUPER_CTOR_CALL
• Constant Field Values

FOR_INIT

public static final int FOR_INIT

A for loop initializer. This is a child of LITERAL_FOR. The children of this element may be a comma separated list of variable declarations, an expression list, or empty.

For example:

 for (int i = 0; i < arr.length; i++) {}
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_INIT -> FOR_INIT
  |   `--VARIABLE_DEF -> VARIABLE_DEF
  |       |--MODIFIERS -> MODIFIERS
  |       |--TYPE -> TYPE
  |       |   `--LITERAL_INT -> int
  |       |--IDENT -> i
  |       `--ASSIGN -> =
  |           `--EXPR -> EXPR
  |               `--NUM_INT -> 0
  |--SEMI -> ;
  |--FOR_CONDITION -> FOR_CONDITION
  |   `--EXPR -> EXPR
  |       `--LT -> <
  |           |--IDENT -> i
  |           `--DOT -> .
  |               |--IDENT -> arr
  |               `--IDENT -> length
  |--SEMI -> ;
  |--FOR_ITERATOR -> FOR_ITERATOR
  |   `--ELIST -> ELIST
  |       `--EXPR -> EXPR
  |           `--POST_INC -> ++
  |               `--IDENT -> i
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• VARIABLE_DEF
• ELIST
• LITERAL_FOR
• Constant Field Values

FOR_CONDITION

public static final int FOR_CONDITION

A for loop condition. This is a child of LITERAL_FOR. The child of this element is an optional expression.

For example:

 for (int i = 0; i < arr.length; i++) {}
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_INIT -> FOR_INIT
  |   `--VARIABLE_DEF -> VARIABLE_DEF
  |       |--MODIFIERS -> MODIFIERS
  |       |--TYPE -> TYPE
  |       |   `--LITERAL_INT -> int
  |       |--IDENT -> i
  |       `--ASSIGN -> =
  |           `--EXPR -> EXPR
  |               `--NUM_INT -> 0
  |--SEMI -> ;
  |--FOR_CONDITION -> FOR_CONDITION
  |   `--EXPR -> EXPR
  |       `--LT -> <
  |           |--IDENT -> i
  |           `--DOT -> .
  |               |--IDENT -> arr
  |               `--IDENT -> length
  |--SEMI -> ;
  |--FOR_ITERATOR -> FOR_ITERATOR
  |   `--ELIST -> ELIST
  |       `--EXPR -> EXPR
  |           `--POST_INC -> ++
  |               `--IDENT -> i
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• EXPR
• LITERAL_FOR
• Constant Field Values

FOR_ITERATOR

public static final int FOR_ITERATOR

A for loop iterator. This is a child of LITERAL_FOR. The child of this element is an optional expression list.

For example:

 for (int i = 0; i < arr.length; i++) {}
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_INIT -> FOR_INIT
  |   `--VARIABLE_DEF -> VARIABLE_DEF
  |       |--MODIFIERS -> MODIFIERS
  |       |--TYPE -> TYPE
  |       |   `--LITERAL_INT -> int
  |       |--IDENT -> i
  |       `--ASSIGN -> =
  |           `--EXPR -> EXPR
  |               `--NUM_INT -> 0
  |--SEMI -> ;
  |--FOR_CONDITION -> FOR_CONDITION
  |   `--EXPR -> EXPR
  |       `--LT -> <
  |           |--IDENT -> i
  |           `--DOT -> .
  |               |--IDENT -> arr
  |               `--IDENT -> length
  |--SEMI -> ;
  |--FOR_ITERATOR -> FOR_ITERATOR
  |   `--ELIST -> ELIST
  |       `--EXPR -> EXPR
  |           `--POST_INC -> ++
  |               `--IDENT -> i
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• ELIST
• LITERAL_FOR
• Constant Field Values

EMPTY_STAT

public static final int EMPTY_STAT

The empty statement. This goes in place of an SLIST for a for or while loop body.

For example:

 while(true);
 

parses as:

 LITERAL_WHILE -> while
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--LITERAL_TRUE -> true
  |--RPAREN -> )
  `--EMPTY_STAT -> ;
 

See Also:

• Java Language Specification, §14.6
• LITERAL_FOR
• LITERAL_WHILE
• Constant Field Values

FINAL

public static final int FINAL

The final keyword.

For example:

 public final int x = 0;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   |--LITERAL_PUBLIC -> public
  |   `--FINAL -> final
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> x
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--NUM_INT -> 0
  `--SEMI -> ;
 

See Also:

• MODIFIERS
• Constant Field Values

ABSTRACT

public static final int ABSTRACT

The abstract keyword.

For example:

  public abstract class MyClass
  {
  }
 

parses as:

 --CLASS_DEF
    |--MODIFIERS
    |   |--LITERAL_PUBLIC (public)
    |   `--ABSTRACT (abstract)
    |--LITERAL_CLASS (class)
    |--IDENT (MyClass)
    `--OBJBLOCK
        |--LCURLY ({)
        `--RCURLY (})
 

See Also:

• MODIFIERS
• Constant Field Values

STRICTFP

public static final int STRICTFP

The strictfp keyword.

For example:

public strictfp class Test {}

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_PUBLIC -> public
 |   `--STRICTFP -> strictfp
 |--LITERAL_CLASS -> class
 |--IDENT -> Test
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• MODIFIERS
• Constant Field Values

SUPER_CTOR_CALL

public static final int SUPER_CTOR_CALL

A super constructor call.

For example:

 super(1);
 

parses as:

 SUPER_CTOR_CALL -> super
  |--LPAREN -> (
  |--ELIST -> ELIST
  |   `--EXPR -> EXPR
  |       `--NUM_INT -> 1
  |--RPAREN -> )
  `--SEMI -> ;
 

See Also:

• ELIST
• RPAREN
• SEMI
• CTOR_CALL
• Constant Field Values

CTOR_CALL

public static final int CTOR_CALL

A constructor call.

For example:

 this(1);
 

parses as:

 CTOR_CALL -> this
  |--LPAREN -> (
  |--ELIST -> ELIST
  |   `--EXPR -> EXPR
  |       `--NUM_INT -> 1
  |--RPAREN -> )
  `--SEMI -> ;
 

See Also:

• ELIST
• RPAREN
• SEMI
• SUPER_CTOR_CALL
• Constant Field Values

SEMI

public static final int SEMI

The statement terminator (;). Depending on the context, this make occur as a sibling, a child, or not at all.

For example:

 for(;;);
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_INIT -> FOR_INIT
  |--SEMI -> ;
  |--FOR_CONDITION -> FOR_CONDITION
  |--SEMI -> ;
  |--FOR_ITERATOR -> FOR_ITERATOR
  |--RPAREN -> )
  `--EMPTY_STAT -> ;
 

See Also:

• PACKAGE_DEF
• IMPORT
• SLIST
• ARRAY_INIT
• LITERAL_FOR
• Constant Field Values

RBRACK

public static final int RBRACK

The ] symbol.

For example:

 int a[];
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--LITERAL_INT -> int
  |   `--ARRAY_DECLARATOR -> [
  |       `--RBRACK -> ]
  |--IDENT -> a
  `--SEMI -> ;
 

See Also:

• INDEX_OP
• ARRAY_DECLARATOR
• Constant Field Values

LITERAL_VOID

public static final int LITERAL_VOID

The void keyword.

For example:

 void LITERAL_VOID(){}
 

'void' parses as:

 METHOD_DEF -> METHOD_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_VOID -> void
  |--IDENT -> LITERAL_VOID
 

See Also:

• TYPE
• Constant Field Values

LITERAL_BOOLEAN

public static final int LITERAL_BOOLEAN

The boolean keyword.

For example:

 public boolean flag;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_BOOLEAN -> boolean
  |--IDENT -> flag
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

LITERAL_BYTE

public static final int LITERAL_BYTE

The byte keyword.

For example:

 public byte x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_BYTE -> byte
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

LITERAL_CHAR

public static final int LITERAL_CHAR

The char keyword.

For example:

 char a = 'A';
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_CHAR -> char
  |--IDENT -> a
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--CHAR_LITERAL -> 'A'
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

LITERAL_SHORT

public static final int LITERAL_SHORT

The short keyword.

For example:

 public short x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_SHORT -> short
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

LITERAL_INT

public static final int LITERAL_INT

The int keyword.

For example:

 public int x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

LITERAL_FLOAT

public static final int LITERAL_FLOAT

The float keyword.

For example:

 public float x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_FLOAT -> float
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

LITERAL_LONG

public static final int LITERAL_LONG

The long keyword.

For example:

 public long x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_LONG -> long
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

LITERAL_DOUBLE

public static final int LITERAL_DOUBLE

The double keyword.

For example:

 public double x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_DOUBLE -> double
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• TYPE
• Constant Field Values

IDENT

public static final int IDENT

An identifier. These can be names of types, subpackages, fields, methods, parameters, and local variables.

For example:

 int a = 10;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> a
  |   `--ASSIGN -> =
  |       `--EXPR -> EXPR
  |           `--NUM_INT -> 10
  `--SEMI -> ;
 

See Also:

• Constant Field Values

DOT

public static final int DOT

The . (dot) operator.

For example:

 return person.name;
 

parses as:

 --LITERAL_RETURN -> return
    |--EXPR -> EXPR
    |   `--DOT -> .
    |       |--IDENT -> person
    |       `--IDENT -> name
    `--SEMI -> ;
 

See Also:

• FullIdent
• Constant Field Values

STAR

public static final int STAR

The * (multiplication or wildcard) operator.

For example:

 f = m * a;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> f
 |       `--STAR -> *
 |           |--IDENT -> m
 |           `--IDENT -> a
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §7.5.2
• Java Language Specification, §15.17.1
• EXPR
• IMPORT
• Constant Field Values

LITERAL_PRIVATE

public static final int LITERAL_PRIVATE

The private keyword.

For example:

 private int x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PRIVATE -> private
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• MODIFIERS
• Constant Field Values

LITERAL_PUBLIC

public static final int LITERAL_PUBLIC

The public keyword.

For example:

 public int x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• MODIFIERS
• Constant Field Values

LITERAL_PROTECTED

public static final int LITERAL_PROTECTED

The protected keyword.

For example:

 protected int x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PROTECTED -> protected
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• MODIFIERS
• Constant Field Values

LITERAL_STATIC

public static final int LITERAL_STATIC

The static keyword.

For example:

 public static int x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   |--LITERAL_PUBLIC -> public
  |   `--LITERAL_STATIC -> static
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> x
  `--SEMI -> ;
 

See Also:

• MODIFIERS
• Constant Field Values

LITERAL_TRANSIENT

public static final int LITERAL_TRANSIENT

The transient keyword.

For example:

 transient int a;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_TRANSIENT -> transient
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> a
  `--SEMI -> ;
 

See Also:

• MODIFIERS
• Constant Field Values

LITERAL_NATIVE

public static final int LITERAL_NATIVE

The native keyword.

For example:

 native void foo(){}
 

parses as:

 METHOD_DEF -> METHOD_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_NATIVE -> native
  |--TYPE -> TYPE
  |   `--LITERAL_VOID -> void
  |--IDENT -> foo
  |--LPAREN -> (
  |--PARAMETERS -> PARAMETERS
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• MODIFIERS
• Constant Field Values

LITERAL_SYNCHRONIZED

public static final int LITERAL_SYNCHRONIZED

The synchronized keyword. This may be used as a modifier of a method or in the definition of a synchronized block.

For example:

 synchronized(this)
 {
   x++;
 }
 

parses as:

 |--LITERAL_SYNCHRONIZED -> synchronized
 |   |--LPAREN -> (
 |   |--EXPR -> EXPR
 |   |   `--LITERAL_THIS -> this
 |   |--RPAREN -> )
 |   `--SLIST -> {
 |       |--EXPR -> EXPR
 |       |   `--POST_INC -> ++
 |       |       `--IDENT -> x
 |       |--SEMI -> ;
 |       `--RCURLY -> }
 `--RCURLY -> }
 

See Also:

• MODIFIERS
• LPAREN
• EXPR
• RPAREN
• SLIST
• RCURLY
• Constant Field Values

LITERAL_VOLATILE

public static final int LITERAL_VOLATILE

The volatile keyword. This may be used as a modifier of a field.

For example:

 private volatile int x;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
 |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_PRIVATE -> private
 |   `--LITERAL_VOLATILE -> volatile
 |--TYPE -> TYPE
 |   `--LITERAL_INT -> int
 |--IDENT -> x
 `--SEMI -> ;
 

See Also:

• MODIFIERS
• Constant Field Values

LITERAL_CLASS

public static final int LITERAL_CLASS

The class keyword. This element appears both as part of a class declaration, and inline to reference a class object.

For example:

 class Test {
 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |--LITERAL_CLASS -> class
 |--IDENT -> Test
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

For example:

 int.class
 

parses as:

 EXPR -> EXPR
  `--DOT -> .
      |--LITERAL_INT -> int
      `--LITERAL_CLASS -> class
 

See Also:

• DOT
• IDENT
• CLASS_DEF
• FullIdent
• Constant Field Values

LITERAL_INTERFACE

public static final int LITERAL_INTERFACE

The interface keyword. This token appears in interface definition.

For example:

 public interface MyInterface {

 }
 

parses as:

 INTERFACE_DEF -> INTERFACE_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_INTERFACE -> interface
 |--IDENT -> MyInterface
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• INTERFACE_DEF
• Constant Field Values

LCURLY

public static final int LCURLY

A left curly brace ({).

For example:

 class App {
   int num;
 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |--LITERAL_CLASS -> class
 |--IDENT -> App
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     |--VARIABLE_DEF -> VARIABLE_DEF
     |   |--MODIFIERS -> MODIFIERS
     |   |--TYPE -> TYPE
     |   |   `--LITERAL_INT -> int
     |   |--IDENT -> num
     |   `--SEMI -> ;
     `--RCURLY -> }
 

See Also:

• OBJBLOCK
• ARRAY_INIT
• SLIST
• Constant Field Values

RCURLY

public static final int RCURLY

A right curly brace (}).

For example:

 
 void foo(){}
 
 

parses as:

 METHOD_DEF -> METHOD_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_VOID -> void
  |--IDENT -> foo
  |--LPAREN -> (
  |--PARAMETERS -> PARAMETERS
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• OBJBLOCK
• ARRAY_INIT
• SLIST
• Constant Field Values

COMMA

public static final int COMMA

The , (comma) operator.

For example:

 int a, b;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_INT -> int
 |   `--IDENT -> a
 |--COMMA -> ,
 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_INT -> int
 |   `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• ARRAY_INIT
• FOR_INIT
• FOR_ITERATOR
• LITERAL_THROWS
• IMPLEMENTS_CLAUSE
• Constant Field Values

LPAREN

public static final int LPAREN

A left parenthesis (().

For example:

 Integer val = new Integer();
 while (false) {
     val += (-3);
 }
 

parses as:

  |--VARIABLE_DEF -> VARIABLE_DEF
  |   |--MODIFIERS -> MODIFIERS
  |   |--TYPE -> TYPE
  |   |   `--IDENT -> Integer
  |   |--IDENT -> val
  |   `--ASSIGN -> =
  |       `--EXPR -> EXPR
  |           `--LITERAL_NEW -> new
  |               |--IDENT -> Integer
  |               |--LPAREN -> (
  |               |--ELIST -> ELIST
  |               `--RPAREN -> )
  |--SEMI -> ;
  |--LITERAL_WHILE -> while
  |   |--LPAREN -> (
  |   |--EXPR -> EXPR
  |   |   `--LITERAL_FALSE -> false
  |   |--RPAREN -> )
  |   `--SLIST -> {
  |       |--EXPR -> EXPR
  |       |   `--PLUS_ASSIGN -> +=
  |       |       |--IDENT -> val
  |       |       |--LPAREN -> (
  |       |       |--UNARY_MINUS -> -
  |       |       |   `--NUM_INT -> 3
  |       |       `--RPAREN -> )
  |       |--SEMI -> ;
  |       `--RCURLY -> }
 

See Also:

• LITERAL_FOR
• LITERAL_NEW
• EXPR
• LITERAL_SWITCH
• LITERAL_CATCH
• Constant Field Values

RPAREN

public static final int RPAREN

A right parenthesis ()).

For example:

 void check() {
 }
 

parses as:

 METHOD_DEF -> METHOD_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_VOID -> void
  |--IDENT -> check
  |--LPAREN -> (
  |--PARAMETERS -> PARAMETERS
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• LITERAL_FOR
• LITERAL_NEW
• METHOD_CALL
• TYPECAST
• EXPR
• LITERAL_SWITCH
• LITERAL_CATCH
• Constant Field Values

LITERAL_THIS

public static final int LITERAL_THIS

The this keyword use to refer the current object. This can also be used to call the constructor.

For example:

 this.name = name;
 

parses as:

 EXPR -> EXPR
  `--ASSIGN -> =
      |--DOT -> .
      |   |--LITERAL_THIS -> this
      |   `--IDENT -> name
      `--IDENT -> name
 SEMI -> ;
 

Also consider:

 this(1, "NULL");
 

parses as:

 CTOR_CALL -> this
  |--LPAREN -> (
  |--ELIST -> ELIST
  |   |--EXPR -> EXPR
  |   |   `--NUM_INT -> 1
  |   |--COMMA -> ,
  |   `--EXPR -> EXPR
  |       `--STRING_LITERAL -> "NULL"
  |--RPAREN -> )
  `--SEMI -> ;
 

See Also:

• EXPR
• CTOR_CALL
• Constant Field Values

LITERAL_SUPER

public static final int LITERAL_SUPER

The super keyword.

For example:

 super.toString()；
 

parses as:

 |--EXPR -> EXPR
 |   `--METHOD_CALL -> (
 |       |--DOT -> .
 |       |  |--LITERAL_SUPER -> super
 |       |  `--IDENT -> toString
 |       |--ELIST -> ELIST
 |       `--RPAREN -> )
 |--SEMI -> ;
 

See Also:

• EXPR
• SUPER_CTOR_CALL
• Constant Field Values

ASSIGN

public static final int ASSIGN

The = (assignment) operator.

For example:

 a = b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.1
• EXPR
• Constant Field Values

LITERAL_THROWS

public static final int LITERAL_THROWS

The throws keyword. The children are a number of one or more identifiers separated by commas.

For example:

 void test() throws FileNotFoundException, EOFException {
 }
 

parses as:

 METHOD_DEF -> METHOD_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_VOID -> void
  |--IDENT -> test
  |--LPAREN -> (
  |--PARAMETERS -> PARAMETERS
  |--RPAREN -> )
  |--LITERAL_THROWS -> throws
  |   |--IDENT -> FileNotFoundException
  |   |--COMMA -> ,
  |   `--IDENT -> EOFException
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• Java Language Specification, §8.4.4
• IDENT
• DOT
• COMMA
• METHOD_DEF
• CTOR_DEF
• FullIdent
• Constant Field Values

COLON

public static final int COLON

The : (colon) operator. This will appear as part of the conditional operator (? :).

For example:

 num = isValid ? 1 : 0;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> num
 |       `--QUESTION -> ?
 |           |--IDENT -> isValid
 |           |--NUM_INT -> 1
 |           |--COLON -> :
 |           `--NUM_INT -> 0
 |--SEMI -> ;
 

See Also:

• QUESTION
• LABELED_STAT
• CASE_GROUP
• Constant Field Values

DOUBLE_COLON

public static final int DOUBLE_COLON

The :: (double colon) separator. It is part of Java 8 syntax that is used for method reference. The token does not appear in tree, METHOD_REF should be used instead.

For example:

 Function<Double, Double> square = MyClass::square;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--IDENT -> Function
  |   |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |   |       |--GENERIC_START -> <
  |   |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |   |       |   `--IDENT -> Double
  |   |       |--COMMA -> ,
  |   |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |   |       |   `--IDENT -> Double
  |   |       `--GENERIC_END -> >
  |   |--IDENT -> square
  |   |--ASSIGN -> =
  |   |   `--EXPR -> EXPR
  |   |       `--METHOD_REF -> ::
  |   |           |--IDENT -> MyClass
  |   |           `--IDENT -> square
  |   `--SEMI -> ;
 

See Also:

• METHOD_REF
• Constant Field Values

LITERAL_IF

public static final int LITERAL_IF

The if keyword.

For example:

 if (optimistic)
 {
   message = "half full";
 }
 else
 {
   message = "half empty";
 }
 

parses as:

 LITERAL_IF -> if
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--IDENT -> optimistic
  |--RPAREN -> )
  |--SLIST -> {
  |   |--EXPR -> EXPR
  |   |   `--ASSIGN -> =
  |   |       |--IDENT -> message
  |   |       `--STRING_LITERAL -> "half full"
  |   |--SEMI -> ;
  |   `--RCURLY -> }
  `--LITERAL_ELSE -> else
      `--SLIST -> {
          |--EXPR -> EXPR
          |   `--ASSIGN -> =
          |       |--IDENT -> message
          |       `--STRING_LITERAL -> "half empty"
          |--SEMI -> ;
          `--RCURLY -> }
 

See Also:

• LPAREN
• EXPR
• RPAREN
• SLIST
• EMPTY_STAT
• LITERAL_ELSE
• Constant Field Values

LITERAL_FOR

public static final int LITERAL_FOR

The for keyword. The children are (, an initializer, a condition, an iterator, a ) and either a statement list, a single expression, or an empty statement.

For example:

 for (int i = 0; i < arr.length; i++) {}
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_INIT -> FOR_INIT
  |   `--VARIABLE_DEF -> VARIABLE_DEF
  |       |--MODIFIERS -> MODIFIERS
  |       |--TYPE -> TYPE
  |       |   `--LITERAL_INT -> int
  |       |--IDENT -> i
  |       `--ASSIGN -> =
  |           `--EXPR -> EXPR
  |               `--NUM_INT -> 0
  |--SEMI -> ;
  |--FOR_CONDITION -> FOR_CONDITION
  |   `--EXPR -> EXPR
  |       `--LT -> <
  |           |--IDENT -> i
  |           `--DOT -> .
  |               |--IDENT -> arr
  |               `--IDENT -> length
  |--SEMI -> ;
  |--FOR_ITERATOR -> FOR_ITERATOR
  |   `--ELIST -> ELIST
  |       `--EXPR -> EXPR
  |           `--POST_INC -> ++
  |               `--IDENT -> i
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• LPAREN
• FOR_INIT
• SEMI
• FOR_CONDITION
• FOR_ITERATOR
• RPAREN
• SLIST
• EMPTY_STAT
• EXPR
• Constant Field Values

LITERAL_WHILE

public static final int LITERAL_WHILE

The while keyword.

For example:

 while (i < 5) {
     i++;
 }
 

parses as:

 LITERAL_WHILE -> while
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--LT -> <
  |       |--IDENT -> i
  |       `--NUM_INT -> 5
  |--RPAREN -> )
  `--SLIST -> {
      |--EXPR -> EXPR
      |   `--POST_INC -> ++
      |       `--IDENT -> i
      |--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• Constant Field Values

LITERAL_DO

public static final int LITERAL_DO

The do keyword. Note that the while token does not appear as part of the do-while construct.

For example:

 do {
   x = rand.nextInt();
 } while (x < 5);
 

parses as:

 LITERAL_DO -> do
  |--SLIST -> {
  |   |--EXPR -> EXPR
  |   |   `--ASSIGN -> =
  |   |       |--IDENT -> x
  |   |       `--METHOD_CALL -> (
  |   |           |--DOT -> .
  |   |           |   |--IDENT -> rand
  |   |           |   `--IDENT -> nextInt
  |   |           |--ELIST -> ELIST
  |   |           `--RPAREN -> )
  |   |--SEMI -> ;
  |   `--RCURLY -> }
  |--DO_WHILE -> while
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--LT -> <
  |       |--IDENT -> x
  |       `--NUM_INT -> 5
  |--RPAREN -> )
  `--SEMI -> ;
 

See Also:

• SLIST
• EXPR
• EMPTY_STAT
• LPAREN
• RPAREN
• SEMI
• Constant Field Values

DO_WHILE

public static final int DO_WHILE

Literal while in do-while loop.

For example:

 do {

 } while (a > 0);
 

parses as:

 --LITERAL_DO -> do
    |--SLIST -> {
    |   `--RCURLY -> }
    |--DO_WHILE -> while
    |--LPAREN -> (
    |--EXPR -> EXPR
    |   `--GT -> >
    |       |--IDENT -> a
    |       `--NUM_INT -> 0
    |--RPAREN -> )
    `--SEMI -> ;
 

See Also:

• LITERAL_DO
• Constant Field Values

LITERAL_BREAK

public static final int LITERAL_BREAK

The break keyword. The first child is an optional identifier and the last child is a semicolon.

For example:

 for (;;) {
     break;
 }
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_INIT -> FOR_INIT
  |--SEMI -> ;
  |--FOR_CONDITION -> FOR_CONDITION
  |--SEMI -> ;
  |--FOR_ITERATOR -> FOR_ITERATOR
  |--RPAREN -> )
  `--SLIST -> {
      |--LITERAL_BREAK -> break
      |   `--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• IDENT
• SEMI
• SLIST
• Constant Field Values

LITERAL_CONTINUE

public static final int LITERAL_CONTINUE

The continue keyword. The first child is an optional identifier and the last child is a semicolon.

For example:

 for (;;) {
     continue;
 }
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_INIT -> FOR_INIT
  |--SEMI -> ;
  |--FOR_CONDITION -> FOR_CONDITION
  |--SEMI -> ;
  |--FOR_ITERATOR -> FOR_ITERATOR
  |--RPAREN -> )
  `--SLIST -> {
      |--LITERAL_CONTINUE -> continue
      |   `--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• IDENT
• SEMI
• SLIST
• Constant Field Values

LITERAL_RETURN

public static final int LITERAL_RETURN

The return keyword. The first child is an optional expression for the return value. The last child is a semicolon.

For example:

 public int foo(int i) {
     return i+1;
 }
 

parses as:

 METHOD_DEF -> METHOD_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   `--LITERAL_INT -> int
  |--IDENT -> foo
  |--LPAREN -> (
  |--PARAMETERS -> PARAMETERS
  |   `--PARAMETER_DEF -> PARAMETER_DEF
  |       |--MODIFIERS -> MODIFIERS
  |       |--TYPE -> TYPE
  |       |   `--LITERAL_INT -> int
  |       `--IDENT -> i
  |--RPAREN -> )
  `--SLIST -> {
      |--LITERAL_RETURN -> return
      |   |--EXPR -> EXPR
      |   |   `--PLUS -> +
      |   |       |--IDENT -> i
      |   |       `--NUM_INT -> 1
      |   `--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• EXPR
• SEMI
• SLIST
• Constant Field Values

LITERAL_SWITCH

public static final int LITERAL_SWITCH

The switch keyword.

For example:

 switch (type) {
      case 0:
          background = Color.red;
          break;
      case 1:
          background = Color.blue;
          break;
      default:
          background = Color.green;
 }
 

parses as:

 LITERAL_SWITCH -> switch
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--IDENT -> type
  |--RPAREN -> )
  |--LCURLY -> {
  |--CASE_GROUP -> CASE_GROUP
  |   |--LITERAL_CASE -> case
  |   |   |--EXPR -> EXPR
  |   |   |   `--NUM_INT -> 0
  |   |   `--COLON -> :
  |   `--SLIST -> SLIST
  |       |--EXPR -> EXPR
  |       |   `--ASSIGN -> =
  |       |       |--IDENT -> background
  |       |       `--DOT -> .
  |       |           |--IDENT -> Color
  |       |           `--IDENT -> red
  |       |--SEMI -> ;
  |       `--LITERAL_BREAK -> break
  |           `--SEMI -> ;
  |--CASE_GROUP -> CASE_GROUP
  |   |--LITERAL_CASE -> case
  |   |   |--EXPR -> EXPR
  |   |   |   `--NUM_INT -> 1
  |   |   `--COLON -> :
  |   `--SLIST -> SLIST
  |       |--EXPR -> EXPR
  |       |   `--ASSIGN -> =
  |       |       |--IDENT -> background
  |       |       `--DOT -> .
  |       |           |--IDENT -> Color
  |       |           `--IDENT -> blue
  |       |--SEMI -> ;
  |       `--LITERAL_BREAK -> break
  |           `--SEMI -> ;
  |--CASE_GROUP -> CASE_GROUP
  |   |--LITERAL_DEFAULT -> default
  |   |   `--COLON -> :
  |   `--SLIST -> SLIST
  |       |--EXPR -> EXPR
  |       |   `--ASSIGN -> =
  |       |       |--IDENT -> background
  |       |       `--DOT -> .
  |       |           |--IDENT -> Color
  |       |           `--IDENT -> green
  |       `--SEMI -> ;
  `--RCURLY -> }
 

See Also:

• Java Language Specification, §14.10
• LPAREN
• EXPR
• RPAREN
• LCURLY
• CASE_GROUP
• RCURLY
• SLIST
• SWITCH_RULE
• Constant Field Values

LITERAL_THROW

public static final int LITERAL_THROW

The throw keyword. The first child is an expression that evaluates to a Throwable instance.

For example:

 throw new ArithmeticException("An exception occurred.");
 

parses as:

 LITERAL_THROW -> throw
  |--EXPR -> EXPR
  |   `--LITERAL_NEW -> new
  |       |--IDENT -> ArithmeticException
  |       |--LPAREN -> (
  |       |--ELIST -> ELIST
  |       |   `--EXPR -> EXPR
  |       |       `--STRING_LITERAL -> "An exception occurred."
  |       `--RPAREN -> )
  `--SEMI -> ;
 

See Also:

• Java Language Specification, §14.17
• SLIST
• EXPR
• Constant Field Values

LITERAL_ELSE

public static final int LITERAL_ELSE

The else keyword. This appears as a child of an if statement.

For example:

 if (flag) {

 } else {

 }
 

parses as:

 LITERAL_IF -> if
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--IDENT -> flag
  |--RPAREN -> )
  |--SLIST -> {
  |   `--RCURLY -> }
  `--LITERAL_ELSE -> else
      `--SLIST -> {
          `--RCURLY -> }
 

See Also:

• SLIST
• EXPR
• EMPTY_STAT
• LITERAL_IF
• Constant Field Values

LITERAL_CASE

public static final int LITERAL_CASE

The case keyword. The first child is a constant expression that evaluates to an integer.

For example:

 switch(num){
    case 0:
      num = 1;
 }
 

parses as:

 CASE_GROUP -> CASE_GROUP
    |--LITERAL_CASE -> cas
    |   |--EXPR -> EXPR
    |   |   `--NUM_INT -> 0
    |   `--COLON -> :
    `--SLIST -> SLIST
         |--EXPR -> EXPR
         |   `--ASSIGN -> =
         |       |--IDENT -> num
         |       `--NUM_INT -> 1
         `--SEMI -> ;
 

For example:

 switch(num){
    case 1 -> num = -1
 }
 

parses as:

 SWITCH_RULE -> SWITCH_RULE
   |--LITERAL_CASE -> case
   |   `--EXPR -> EXPR
   |       `--NUM_INT -> 1
   |--LAMBDA -> ->
   |--EXPR -> EXPR
   |   `--ASSIGN -> =
   |       |--IDENT -> num
   |       `--UNARY_MINUS -> -
   |           `--NUM_INT -> 1
   `--SEMI -> ;
 

See Also:

• CASE_GROUP
• EXPR
• Constant Field Values

LITERAL_DEFAULT

public static final int LITERAL_DEFAULT

The default keyword. This element has no children.

For example:

 switch (type) {
   case 1:
     x = 1;
     break;
   default:
     x = 3;
 }
 

parses as:

 LITERAL_SWITCH -> switch
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--IDENT -> type
  |--RPAREN -> )
  |--LCURLY -> {
  |--CASE_GROUP -> CASE_GROUP
  |   |--LITERAL_CASE -> case
  |   |   |--EXPR -> EXPR
  |   |   |   `--NUM_INT -> 1
  |   |   `--COLON -> :
  |   `--SLIST -> SLIST
  |       |--EXPR -> EXPR
  |       |   `--ASSIGN -> =
  |       |       |--IDENT -> x
  |       |       `--NUM_INT -> 1
  |       |   |       |--SEMI -> ;
  |       `--LITERAL_BREAK -> break
  |           `--SEMI -> ;
  |--CASE_GROUP -> CASE_GROUP
  |   |--LITERAL_DEFAULT -> default
  |   |   `--COLON -> :
  |   `--SLIST -> SLIST
  |       |--EXPR -> EXPR
  |       |   `--ASSIGN -> =
  |       |       |--IDENT -> x
  |       |       `--NUM_INT -> 3
  |       `--SEMI -> ;
  `--RCURLY -> }
 

See Also:

• CASE_GROUP
• MODIFIERS
• SWITCH_RULE
• Constant Field Values

LITERAL_TRY

public static final int LITERAL_TRY

The try keyword. The children are a statement list, zero or more catch blocks and then an optional finally block.

For example:

 try { } finally {}
 

parses as:

 LITERAL_TRY -> try
  |--SLIST -> {
  |   `--RCURLY -> }
  `--LITERAL_FINALLY -> finally
      `--SLIST -> {
          `--RCURLY -> }
 

See Also:

• Java Language Specification, §14.19
• SLIST
• LITERAL_CATCH
• LITERAL_FINALLY
• Constant Field Values

RESOURCE_SPECIFICATION

public static final int RESOURCE_SPECIFICATION

The Java 7 try-with-resources construct.

For example:

 try (Foo foo = new Foo(); Bar bar = new Bar()) {
 }
 

parses as:

 LITERAL_TRY -> try
  |--RESOURCE_SPECIFICATION -> RESOURCE_SPECIFICATION
  |   |--LPAREN -> (
  |   |--RESOURCES -> RESOURCES
  |   |   |--RESOURCE -> RESOURCE
  |   |   |   |--MODIFIERS -> MODIFIERS
  |   |   |   |--TYPE -> TYPE
  |   |   |   |   `--IDENT -> Foo
  |   |   |   |--IDENT -> foo
  |   |   |   `--ASSIGN -> =
  |   |   |       `--EXPR -> EXPR
  |   |   |           `--LITERAL_NEW -> new
  |   |   |               |--IDENT -> Foo
  |   |   |               |--LPAREN -> (
  |   |   |               |--ELIST -> ELIST
  |   |   |               `--RPAREN -> )
  |   |   |--SEMI -> ;
  |   |   `--RESOURCE -> RESOURCE
  |   |       |--MODIFIERS -> MODIFIERS
  |   |       |--TYPE -> TYPE
  |   |       |   `--IDENT -> Bar
  |   |       |--IDENT -> bar
  |   |       `--ASSIGN -> =
  |   |           `--EXPR -> EXPR
  |   |               `--LITERAL_NEW -> new
  |   |                   |--IDENT -> Bar
  |   |                   |--LPAREN -> (
  |   |                   |--ELIST -> ELIST
  |   |                   `--RPAREN -> )
  |   `--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

Also consider:

 try (BufferedReader br = new BufferedReader(new FileReader(path))) {
 }
 

which parses as:

 LITERAL_TRY -> try
  |--RESOURCE_SPECIFICATION -> RESOURCE_SPECIFICATION
  |   |--LPAREN -> (
  |   |--RESOURCES -> RESOURCES
  |   |   `--RESOURCE -> RESOURCE
  |   |       |--MODIFIERS -> MODIFIERS
  |   |       |--TYPE -> TYPE
  |   |       |   `--IDENT -> BufferedReader
  |   |       |--IDENT -> br
  |   |       `--ASSIGN -> =
  |   |           `--EXPR -> EXPR
  |   |               `--LITERAL_NEW -> new
  |   |                   |--IDENT -> BufferedReader
  |   |                   |--LPAREN -> (
  |   |                   |--ELIST -> ELIST
  |   |                   |   `--EXPR -> EXPR
  |   |                   |       `--LITERAL_NEW -> new
  |   |                   |           |--IDENT -> FileReader
  |   |                   |           |--LPAREN -> (
  |   |                   |           |--ELIST -> ELIST
  |   |                   |           |   `--EXPR -> EXPR
  |   |                   |           |       `--IDENT -> path
  |   |                   |           `--RPAREN -> )
  |   |                   `--RPAREN -> )
  |   `--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• LPAREN
• RESOURCES
• RESOURCE
• SEMI
• RPAREN
• LITERAL_TRY
• Constant Field Values

RESOURCES

public static final int RESOURCES

A list of resources in the Java 7 try-with-resources construct. This is a child of RESOURCE_SPECIFICATION.

For example:

     try (FileReader fr = new FileReader("config.xml")) {
     } finally {}
 

parses as:

 LITERAL_TRY -> try
  |--RESOURCE_SPECIFICATION -> RESOURCE_SPECIFICATION
  |   |--LPAREN -> (
  |   |--RESOURCES -> RESOURCES
  |   |   `--RESOURCE -> RESOURCE
  |   |       |--MODIFIERS -> MODIFIERS
  |   |       |--TYPE -> TYPE
  |   |       |   `--IDENT -> FileReader
  |   |       |--IDENT -> fr
  |   |       `--ASSIGN -> =
  |   |           `--EXPR -> EXPR
  |   |               `--LITERAL_NEW -> new
  |   |                   |--IDENT -> FileReader
  |   |                   |--LPAREN -> (
  |   |                   |--ELIST -> ELIST
  |   |                   |   `--EXPR -> EXPR
  |   |                   |       `--STRING_LITERAL -> "config.xml"
  |   |                   `--RPAREN -> )
  |   `--RPAREN -> )
  |--SLIST -> {
  |   `--RCURLY -> }
  `--LITERAL_FINALLY -> finally
      `--SLIST -> {
          `--RCURLY -> }
 

See Also:

• RESOURCE_SPECIFICATION
• Constant Field Values

RESOURCE

public static final int RESOURCE

A resource in the Java 7 try-with-resources construct. This is a child of RESOURCES.

For example:

 try (Foo foo = new Foo(); Bar bar = new Bar()) { }
 

parses as:

 LITERAL_TRY -> try
  |--RESOURCE_SPECIFICATION -> RESOURCE_SPECIFICATION
  |   |--LPAREN -> (
  |   |--RESOURCES -> RESOURCES
  |   |   |--RESOURCE -> RESOURCE
  |   |   |   |--MODIFIERS -> MODIFIERS
  |   |   |   |--TYPE -> TYPE
  |   |   |   |   `--IDENT -> Foo
  |   |   |   |--IDENT -> foo
  |   |   |   `--ASSIGN -> =
  |   |   |       `--EXPR -> EXPR
  |   |   |           `--LITERAL_NEW -> new
  |   |   |               |--IDENT -> Foo
  |   |   |               |--LPAREN -> (
  |   |   |               |--ELIST -> ELIST
  |   |   |               `--RPAREN -> )
  |   |   |--SEMI -> ;
  |   |   `--RESOURCE -> RESOURCE
  |   |       |--MODIFIERS -> MODIFIERS
  |   |       |--TYPE -> TYPE
  |   |       |   `--IDENT -> Bar
  |   |       |--IDENT -> bar
  |   |       `--ASSIGN -> =
  |   |           `--EXPR -> EXPR
  |   |               `--LITERAL_NEW -> new
  |   |                   |--IDENT -> Bar
  |   |                   |--LPAREN -> (
  |   |                   |--ELIST -> ELIST
  |   |                   `--RPAREN -> )
  |   `--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

See Also:

• RESOURCES
• RESOURCE_SPECIFICATION
• Constant Field Values

LITERAL_CATCH

public static final int LITERAL_CATCH

The catch keyword.

For example:

 try {
     FileReader fr = new FileReader("Test.txt");
 } catch (FileNotFoundException e) {

 }
 

parses as:

 LITERAL_TRY -> try
  |--SLIST -> {
  |   |--VARIABLE_DEF -> VARIABLE_DEF
  |   |   |--MODIFIERS -> MODIFIERS
  |   |   |--TYPE -> TYPE
  |   |   |   `--IDENT -> FileReader
  |   |   |--IDENT -> fr
  |   |   `--ASSIGN -> =
  |   |       `--EXPR -> EXPR
  |   |           `--LITERAL_NEW -> new
  |   |               |--IDENT -> FileReader
  |   |               |--LPAREN -> (
  |   |               |--ELIST -> ELIST
  |   |               |   `--EXPR -> EXPR
  |   |               |       `--STRING_LITERAL -> "Test.txt"
  |   |               `--RPAREN -> )
  |   |--SEMI -> ;
  |   `--RCURLY -> }
  `--LITERAL_CATCH -> catch
      |--LPAREN -> (
      |--PARAMETER_DEF -> PARAMETER_DEF
      |   |--MODIFIERS -> MODIFIERS
      |   |--TYPE -> TYPE
      |   |   `--IDENT -> FileNotFoundException
      |   `--IDENT -> e
      |--RPAREN -> )
      `--SLIST -> {
          `--RCURLY -> }
 

See Also:

• LPAREN
• PARAMETER_DEF
• RPAREN
• SLIST
• LITERAL_TRY
• Constant Field Values

LITERAL_FINALLY

public static final int LITERAL_FINALLY

The finally keyword.

For example:

 try {} finally {}
 

parses as:

 LITERAL_TRY -> try
  |--SLIST -> {
  |   `--RCURLY -> }
  `--LITERAL_FINALLY -> finally
      `--SLIST -> {
          `--RCURLY -> }
 

See Also:

• SLIST
• LITERAL_TRY
• Constant Field Values

PLUS_ASSIGN

public static final int PLUS_ASSIGN

The += (addition assignment) operator.

For example:

 a += b;
 

parses as:

 |--EXPR -> EXPR
 |   `--PLUS_ASSIGN -> +=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

MINUS_ASSIGN

public static final int MINUS_ASSIGN

The -= (subtraction assignment) operator.

For example:

 a -= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--MINUS_ASSIGN -> -=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

STAR_ASSIGN

public static final int STAR_ASSIGN

The *= (multiplication assignment) operator.

For example:

 a *= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--STAR_ASSIGN -> *=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

DIV_ASSIGN

public static final int DIV_ASSIGN

The /= (division assignment) operator.

For example:

 a /= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--DIV_ASSIGN -> /=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

MOD_ASSIGN

public static final int MOD_ASSIGN

The %= (remainder assignment) operator.

For example:

a %= 2;

parses as:

 |--EXPR -> EXPR
 |   `--MOD_ASSIGN -> %=
 |       |--IDENT -> a
 |       `--NUM_INT -> 2
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

SR_ASSIGN

public static final int SR_ASSIGN

The >>= (signed right shift assignment) operator.

For example:

 a >>= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--SR_ASSIGN -> >>=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

BSR_ASSIGN

public static final int BSR_ASSIGN

The >>>= (unsigned right shift assignment) operator.

For example:

 a >>>= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--BSR_ASSIGN -> >>>=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

SL_ASSIGN

public static final int SL_ASSIGN

The <<= (left shift assignment) operator.

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

BAND_ASSIGN

public static final int BAND_ASSIGN

The &= (bitwise AND assignment) operator.

For example:

 a &= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--BAND_ASSIGN -> &=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

BXOR_ASSIGN

public static final int BXOR_ASSIGN

The ^= (bitwise exclusive OR assignment) operator.

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

BOR_ASSIGN

public static final int BOR_ASSIGN

The |= (bitwise OR assignment) operator.

For example:

 a |= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--BOR_ASSIGN -> |=
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.26.2
• EXPR
• Constant Field Values

QUESTION

public static final int QUESTION

The ? (conditional) operator. Technically, the colon is also part of this operator, but it appears as a separate token.

For example:

 String variable=(quantity==1)?"true":"false";
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--IDENT -> String
 |   |--IDENT -> variable
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--QUESTION -> ?
 |               |--LPAREN -> (
 |               |--EQUAL -> ==
 |               |   |--IDENT -> quantity
 |               |   `--NUM_INT -> 1
 |               |--RPAREN -> )
 |               |--STRING_LITERAL -> "true"
 |               |--COLON -> :
 |               `--STRING_LITERAL -> "false"
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.25
• EXPR
• COLON
• Constant Field Values

LOR

public static final int LOR

The || (conditional OR) operator.

For example:

 if (a || b) {
 }
 

parses as:

 LITERAL_IF -> if
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--LOR -> ||
  |       |--IDENT -> a
  |       `--IDENT -> b
  |--RPAREN -> )
  |--SLIST -> {
  |   |--RCURLY -> }
 

See Also:

• Java Language Specification, §15.24
• EXPR
• Constant Field Values

LAND

public static final int LAND

The && (conditional AND) operator.

For example:

 if (a && b) {
 }
 

parses as:

 LITERAL_IF -> if
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--LAND -> &&
  |       |--IDENT -> a
  |       `--IDENT -> b
  |--RPAREN -> )
  |--SLIST -> {
  |   |--RCURLY -> }
 

See Also:

• Java Language Specification, §15.23
• EXPR
• Constant Field Values

BOR

public static final int BOR

The | (bitwise OR) operator.

For example:

 a = a | b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--BOR -> |
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.22.1
• EXPR
• Constant Field Values

BXOR

public static final int BXOR

The ^ (bitwise exclusive OR) operator.

See Also:

• Java Language Specification, §15.22.1
• EXPR
• Constant Field Values

BAND

public static final int BAND

The & (bitwise AND) operator.

For example:

 c = a & b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> c
 |       `--BAND -> &
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.22.1
• EXPR
• Constant Field Values

NOT_EQUAL

public static final int NOT_EQUAL

The != (not equal) operator.

For example:

 a != b;
 

parses as:

 |--EXPR -> EXPR
 |   `--NOT_EQUAL -> !=
 |       |--IDENT -> a
 |       `--IDENT -> b
 `--SEMI -> ;
 

See Also:

• EXPR
• Constant Field Values

EQUAL

public static final int EQUAL

The == (equal) operator.

For example:

 return a == b;
 

parses as:

 |--EXPR -> EXPR
 |   `--EQUAL -> ==
 |       |--IDENT -> a
 |       `--IDENT -> b
 `--SEMI -> ;
 

See Also:

• EXPR
• Constant Field Values

LT

public static final int LT

The < (less than) operator.

For example:

 c = a < b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> c
 |       `--LT -> <
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• EXPR
• Constant Field Values

GT

public static final int GT

The > (greater than) operator.

For example:

 c = a > b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> c
 |       `--BAND -> >
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• EXPR
• Constant Field Values

LE

public static final int LE

The <= (less than or equal) operator.

For example:

 c = a <= b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> c
 |       `--LE -> <=
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• EXPR
• Constant Field Values

GE

public static final int GE

The >= (greater than or equal) operator.

For example:

   boolean b = a >= 3;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_BOOLEAN -> boolean
  |--IDENT -> b
  `--ASSIGN -> =
      `--EXPR -> EXPR
          `--GE -> >=
              |--IDENT -> a
              `--NUM_INT -> 3
 

See Also:

• EXPR
• Constant Field Values

LITERAL_INSTANCEOF

public static final int LITERAL_INSTANCEOF

The instanceof operator. The first child is an object reference or something that evaluates to an object reference. The second child is a reference type or pattern.

For example:

 boolean isBuilderReferenceType = text instanceof StringBuilder; // reference type
 boolean isBuilderPatternWithPattern =
         text instanceof StringBuilder s; // type pattern, no `PATTERN_DEF`
 boolean isBuilderEmpty = text instanceof
         (StringBuilder sb && sb.isEmpty());  // guarded pattern, `PATTERN_DEF`
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_BOOLEAN -> boolean
 |   |--IDENT -> isBuilderReferenceType
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--LITERAL_INSTANCEOF -> instanceof
 |               |--IDENT -> text
 |               `--TYPE -> TYPE
 |                   `--IDENT -> StringBuilder
 |--SEMI -> ;
 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_BOOLEAN -> boolean
 |   |--IDENT -> isBuilderPatternWithPattern
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--LITERAL_INSTANCEOF -> instanceof
 |               |--IDENT -> text
 |               `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |                   |--MODIFIERS -> MODIFIERS
 |                   |--TYPE -> TYPE
 |                   |   `--IDENT -> StringBuilder
 |                   `--IDENT -> s
 |--SEMI -> ;
 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_BOOLEAN -> boolean
 |   |--IDENT -> isBuilderEmpty
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--LITERAL_INSTANCEOF -> instanceof
 |               |--IDENT -> text
 |               `--PATTERN_DEF -> PATTERN_DEF
 |                   `--LPAREN -> (
 |                       |--LAND -> &&
 |                       |   |--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |                       |   |   |--MODIFIERS -> MODIFIERS
 |                       |   |   |--TYPE -> TYPE
 |                       |   |   |   `--IDENT -> StringBuilder
 |                       |   |   `--IDENT -> sb
 |                       |   `--METHOD_CALL -> (
 |                       |       |--DOT -> .
 |                       |       |   |--IDENT -> sb
 |                       |       |   `--IDENT -> isEmpty
 |                       |       |--ELIST -> ELIST
 |                       |       `--RPAREN -> )
 |                       `--RPAREN -> )
 `--SEMI -> ;
 

See Also:

• Java Language Specification, §15.20.2
• EXPR
• METHOD_CALL
• IDENT
• DOT
• TYPE
• PATTERN_VARIABLE_DEF
• PATTERN_DEF
• FullIdent
• Constant Field Values

SL

public static final int SL

The << (shift left) operator.

For example:

 a = a << b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--SR -> <<
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.19
• EXPR
• Constant Field Values

SR

public static final int SR

The >> (signed shift right) operator.

For example:

 a = a >> b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--SR -> >>
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.19
• EXPR
• Constant Field Values

BSR

public static final int BSR

The >>> (unsigned shift right) operator.

For example:

 a >>> b;
 

parses as:

 |--EXPR -> EXPR
 |   `--BSR -> >>>
 |       |--IDENT -> a
 |       `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.19
• EXPR
• Constant Field Values

PLUS

public static final int PLUS

The + (addition) operator.

For example:

 c = a + b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> c
 |       `--PLUS -> +
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.18
• EXPR
• Constant Field Values

MINUS

public static final int MINUS

The - (subtraction) operator.

For example:

 c = a - b;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> c
 |       `--MINUS -> -
 |           |--IDENT -> a
 |           `--IDENT -> b
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.18
• EXPR
• Constant Field Values

DIV

public static final int DIV

The / (division) operator.

For example:

 a = 4 / 2;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--DIV -> /
 |           |--NUM_INT -> 4
 |           `--NUM_INT -> 2
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.17.2
• EXPR
• Constant Field Values

MOD

public static final int MOD

The % (remainder) operator.

For example:

 c = a % b;
 

parses as:

 EXPR -> EXPR
  `--ASSIGN -> =
      |--IDENT -> c
      `--MOD -> %
          |--IDENT -> a
          `--IDENT -> b
 SEMI -> ;
 

See Also:

• Java Language Specification, §15.17.3
• EXPR
• Constant Field Values

INC

public static final int INC

The ++ (prefix increment) operator.

For example:

 ++a;
 

parses as:

 |--EXPR -> EXPR
 |   `--INC -> ++
 |       `--IDENT -> a
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.15.1
• EXPR
• POST_INC
• Constant Field Values

DEC

public static final int DEC

The -- (prefix decrement) operator.

For example:

 --a;
 

parses as:

 |--EXPR -> EXPR
 |   `--DEC -> --
 |       `--IDENT -> a
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.15.2
• EXPR
• POST_DEC
• Constant Field Values

BNOT

public static final int BNOT

The ~ (bitwise complement) operator.

For example:

 a = ~ a;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--BNOT -> ~
 |           `--IDENT -> a
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.15.5
• EXPR
• Constant Field Values

LNOT

public static final int LNOT

The ! (logical complement) operator.

For example:

 c = ! a;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> c
 |       `--LNOT -> !
 |           `--IDENT -> a
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §15.15.6
• EXPR
• Constant Field Values

LITERAL_TRUE

public static final int LITERAL_TRUE

The true keyword.

For example:

 boolean a = true;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_BOOLEAN -> boolean
 |   |--IDENT -> a
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--LITERAL_TRUE -> true
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.3
• EXPR
• LITERAL_FALSE
• Constant Field Values

LITERAL_FALSE

public static final int LITERAL_FALSE

The false keyword.

For example:

 boolean a = false;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--LITERAL_BOOLEAN -> boolean
  |--IDENT -> a
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--LITERAL_FALSE -> false
  `--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.3
• EXPR
• LITERAL_TRUE
• Constant Field Values

LITERAL_NULL

public static final int LITERAL_NULL

The null keyword.

For example:

 String s = null;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--IDENT -> String
  |--IDENT -> s
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--LITERAL_NULL -> null
  `--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.7
• EXPR
• Constant Field Values

LITERAL_NEW

public static final int LITERAL_NEW

The new keyword. This element is used to define new instances of objects, new arrays, and new anonymous inner classes.

For example:

 List<String> l = new ArrayList<String>();
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--IDENT -> List
  |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |       |--GENERIC_START -> <
  |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |       |   `--IDENT -> String
  |       `--GENERIC_END -> >
  |--IDENT -> l
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--LITERAL_NEW -> new
  |           |--IDENT -> ArrayList
  |           |--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |           |   |--GENERIC_START -> <
  |           |   |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |           |   |   `--IDENT -> String
  |           |   `--GENERIC_END -> >
  |           |--LPAREN -> (
  |           |--ELIST -> ELIST
  |           `--RPAREN -> )
  `--SEMI -> ;
 

For example:

 String[] strings = new String[3];
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--IDENT -> String
  |   `--ARRAY_DECLARATOR -> [
  |       `--RBRACK -> ]
  |--IDENT -> strings
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--LITERAL_NEW -> new
  |           |--IDENT -> String
  |           `--ARRAY_DECLARATOR -> [
  |               |--EXPR -> EXPR
  |               |   `--NUM_INT -> 3
  |               `--RBRACK -> ]
  `--SEMI -> ;
 

For example:

 Supplier<Integer> s = new Supplier<>() {
     @Override
     public Integer get() {
         return 42;
     }
 };
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--IDENT -> Supplier
  |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |       |--GENERIC_START -> <
  |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |       |   `--IDENT -> Integer
  |       `--GENERIC_END -> >
  |--IDENT -> s
  |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--LITERAL_NEW -> new
  |           |--IDENT -> Supplier
  |           |--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |           |   |--GENERIC_START -> <
  |           |   `--GENERIC_END -> >
  |           |--LPAREN -> (
  |           |--ELIST -> ELIST
  |           |--RPAREN -> )
  |           `--OBJBLOCK -> OBJBLOCK
  |               |--LCURLY -> {
  |               |--METHOD_DEF -> METHOD_DEF
  |               |   |--MODIFIERS -> MODIFIERS
  |               |   |   |--ANNOTATION -> ANNOTATION
  |               |   |   |   |--AT -> @
  |               |   |   |   `--IDENT -> Override
  |               |   |   `--LITERAL_PUBLIC -> public
  |               |   |--TYPE -> TYPE
  |               |   |   `--IDENT -> Integer
  |               |   |--IDENT -> get
  |               |   |--LPAREN -> (
  |               |   |--PARAMETERS -> PARAMETERS
  |               |   |--RPAREN -> )
  |               |   `--SLIST -> {
  |               |       |--LITERAL_RETURN -> return
  |               |       |   |--EXPR -> EXPR
  |               |       |   |   `--NUM_INT -> 42
  |               |       |   `--SEMI -> ;
  |               |       `--RCURLY -> }
  |               `--RCURLY -> }
  `--SEMI -> ;
 

See Also:

• IDENT
• DOT
• LPAREN
• ELIST
• RPAREN
• OBJBLOCK
• ARRAY_INIT
• FullIdent
• Constant Field Values

NUM_INT

public static final int NUM_INT

An integer literal. These may be specified in decimal, hexadecimal, or octal form.

For example:

 a = 3;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--NUM_INT -> 3
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.1
• EXPR
• NUM_LONG
• Constant Field Values

CHAR_LITERAL

public static final int CHAR_LITERAL

A character literal. This is a (possibly escaped) character enclosed in single quotes.

For example:

 return 'a';
 

parses as:

 --LITERAL_RETURN -> return
    |--EXPR -> EXPR
    |   `--CHAR_LITERAL -> 'a'
    `--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.4
• EXPR
• Constant Field Values

STRING_LITERAL

public static final int STRING_LITERAL

A string literal. This is a sequence of (possibly escaped) characters enclosed in double quotes.

For example:

String str = "StringLiteral";

parses as:

  |--VARIABLE_DEF -> VARIABLE_DEF
  |   |--MODIFIERS -> MODIFIERS
  |   |--TYPE -> TYPE
  |   |   `--IDENT -> String
  |   |--IDENT -> str
  |   `--ASSIGN -> =
  |       `--EXPR -> EXPR
  |           `--STRING_LITERAL -> "StringLiteral"
  |--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.5
• EXPR
• Constant Field Values

NUM_FLOAT

public static final int NUM_FLOAT

A single precision floating point literal. This is a floating point number with an F or f suffix.

For example:

 a = 3.14f;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--NUM_FLOAT -> 3.14f
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.2
• EXPR
• NUM_DOUBLE
• Constant Field Values

NUM_LONG

public static final int NUM_LONG

A long integer literal. These are almost the same as integer literals, but they have an L or l (ell) suffix.

For example:

 a = 3l;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--NUM_LONG -> 3l
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.1
• EXPR
• NUM_INT
• Constant Field Values

NUM_DOUBLE

public static final int NUM_DOUBLE

A double precision floating point literal. This is a floating point number with an optional D or d suffix.

For example:

 a = 3.14d;
 

parses as:

 |--EXPR -> EXPR
 |   `--ASSIGN -> =
 |       |--IDENT -> a
 |       `--NUM_DOUBLE -> 3.14d
 |--SEMI -> ;
 

See Also:

• Java Language Specification, §3.10.2
• EXPR
• NUM_FLOAT
• Constant Field Values

LITERAL_ASSERT

public static final int LITERAL_ASSERT

The assert keyword. This is only for Java 1.4 and later.

For example:

 assert(x==4);
 

parses as:

 LITERAL_ASSERT -> assert
  |--EXPR -> EXPR
  |   |--LPAREN -> (
  |   |--EQUAL -> ==
  |   |   |--IDENT -> x
  |   |   `--NUM_INT -> 4
  |   `--RPAREN -> )
  `--SEMI -> ;
 

See Also:

• Constant Field Values

STATIC_IMPORT

public static final int STATIC_IMPORT

A static import declaration. Static import declarations are optional, but must appear after the package declaration and before the type declaration.

For example:

 import static java.io.IOException;
 

parses as:

 STATIC_IMPORT -> import
 |--LITERAL_STATIC -> static
 |--DOT -> .
 |   |--DOT -> .
 |   |   |--IDENT -> java
 |   |   `--IDENT -> io
 |   `--IDENT -> IOException
 `--SEMI -> ;
 

See Also:

• JSR201
• LITERAL_STATIC
• DOT
• IDENT
• STAR
• SEMI
• FullIdent
• Constant Field Values

ENUM_DEF

public static final int ENUM_DEF

An enum declaration. Its notable children are enum constant declarations followed by any construct that may be expected in a class body.

For example:

 public enum MyEnum
   implements Serializable
 {
     FIRST_CONSTANT,
     SECOND_CONSTANT;

     public void someMethod()
     {
     }
 }
 

parses as:

 ENUM_DEF -> ENUM_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--ENUM -> enum
  |--IDENT -> MyEnum
  |--IMPLEMENTS_CLAUSE -> implements
  |   `--IDENT -> Serializable
  `--OBJBLOCK -> OBJBLOCK
      |--LCURLY -> {
      |--ENUM_CONSTANT_DEF -> ENUM_CONSTANT_DEF
      |   |--ANNOTATIONS -> ANNOTATIONS
      |   `--IDENT -> FIRST_CONSTANT
      |--COMMA -> ,
      |--ENUM_CONSTANT_DEF -> ENUM_CONSTANT_DEF
      |   |--ANNOTATIONS -> ANNOTATIONS
      |   `--IDENT -> SECOND_CONSTANT
      |--SEMI -> ;
      |--METHOD_DEF -> METHOD_DEF
      |   |--MODIFIERS -> MODIFIERS
      |   |   `--LITERAL_PUBLIC -> public
      |   |--TYPE -> TYPE
      |   |   `--LITERAL_VOID -> void
      |   |--IDENT -> someMethod
      |   |--LPAREN -> (
      |   |--PARAMETERS -> PARAMETERS
      |   |--RPAREN -> )
      |   `--SLIST -> {
      |       `--RCURLY -> }
      `--RCURLY -> }
 

See Also:

• JSR201
• MODIFIERS
• ENUM
• IDENT
• EXTENDS_CLAUSE
• IMPLEMENTS_CLAUSE
• OBJBLOCK
• LITERAL_NEW
• ENUM_CONSTANT_DEF
• Constant Field Values

ENUM

public static final int ENUM

The enum keyword. This element appears as part of an enum declaration.

For example:

 public enum Count {}
 

parses as:

 ENUM_DEF -> ENUM_DEF
  |--MODIFIERS -> MODIFIERS
  |  `--LITERAL_PUBLIC -> public
  |--ENUM -> enum
  |--IDENT -> Count
  `--OBJBLOCK -> OBJBLOCK
      |--LCURLY -> {
      `--RCURLY -> }
 

See Also:

• JSR201
• MODIFIERS
• ENUM_DEF
• IDENT
• OBJBLOCK
• Constant Field Values

ENUM_CONSTANT_DEF

public static final int ENUM_CONSTANT_DEF

An enum constant declaration. Its notable children are annotations, arguments and object block akin to an anonymous inner class' body.

For example:

 SOME_CONSTANT(1)
 {
     public void someMethodOverriddenFromMainBody()
     {
     }
 }
 

parses as:

 ENUM_CONSTANT_DEF -> ENUM_CONSTANT_DEF
   |   |--ANNOTATIONS -> ANNOTATIONS
   |   |--IDENT -> SOME_CONSTANT
   |   |--LPAREN -> (
   |   |--ELIST -> ELIST
   |   |   `--EXPR -> EXPR
   |   |       `--NUM_INT -> 1
   |   |--RPAREN -> )
   |   `--OBJBLOCK -> OBJBLOCK
   |       |--LCURLY -> {
   |       |--METHOD_DEF -> METHOD_DEF
   |       |   |--MODIFIERS -> MODIFIERS
   |       |   |   `--LITERAL_PUBLIC -> public
   |       |   |--TYPE -> TYPE
   |       |   |   `--LITERAL_VOID -> void
   |       |   |--IDENT -> someMethodOverriddenFromMainBody
   |       |   |--LPAREN -> (
   |       |   |--PARAMETERS -> PARAMETERS
   |       |   |--RPAREN -> )
   |       |   `--SLIST -> {
   |       |       `--RCURLY -> }
   |       `--RCURLY -> }
 

See Also:

• JSR201
• ANNOTATIONS
• MODIFIERS
• IDENT
• ELIST
• OBJBLOCK
• Constant Field Values

FOR_EACH_CLAUSE

public static final int FOR_EACH_CLAUSE

A for-each clause. This is a child of LITERAL_FOR. The children of this element may be a parameter definition, the colon literal and an expression.

For example:

 for (int value : values) {
     doSmth();
 }
 

parses as:

 LITERAL_FOR -> for
  |--LPAREN -> (
  |--FOR_EACH_CLAUSE -> FOR_EACH_CLAUSE
  |   |--VARIABLE_DEF -> VARIABLE_DEF
  |   |   |--MODIFIERS -> MODIFIERS
  |   |   |--TYPE -> TYPE
  |   |   |   `--LITERAL_INT -> int
  |   |   `--IDENT -> value
  |   |--COLON -> :
  |   `--EXPR -> EXPR
  |       `--IDENT -> values
  |--RPAREN -> )
  `--SLIST -> {
      |--EXPR -> EXPR
      |   `--METHOD_CALL -> (
      |       |--IDENT -> doSmth
      |       |--ELIST -> ELIST
      |       `--RPAREN -> )
      |--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• VARIABLE_DEF
• ELIST
• LITERAL_FOR
• Constant Field Values

ANNOTATION_DEF

public static final int ANNOTATION_DEF

An annotation declaration. The notable children are the name of the annotation type, annotation field declarations and (constant) fields.

For example:

 public @interface MyAnnotation
 {
     int someValue();
 }
 

parses as:

 ANNOTATION_DEF -> ANNOTATION_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--AT -> @
  |--LITERAL_INTERFACE -> interface
  |--IDENT -> MyAnnotation
  `--OBJBLOCK -> OBJBLOCK
      |--LCURLY -> {
      |--ANNOTATION_FIELD_DEF -> ANNOTATION_FIELD_DEF
      |   |--MODIFIERS -> MODIFIERS
      |   |--TYPE -> TYPE
      |   |   `--LITERAL_INT -> int
      |   |--IDENT -> someValue
      |   |--LPAREN -> (
      |   |--RPAREN -> )
      |   `--SEMI -> ;
      `--RCURLY -> }
 

See Also:

• JSR201
• MODIFIERS
• LITERAL_INTERFACE
• IDENT
• OBJBLOCK
• ANNOTATION_FIELD_DEF
• Constant Field Values

ANNOTATION_FIELD_DEF

public static final int ANNOTATION_FIELD_DEF

An annotation field declaration. The notable children are modifiers, field type, field name and an optional default value (a conditional compile-time constant expression). Default values may also be annotations.

For example:

     String someField() default "Hello world";
 

parses as:

 ANNOTATION_FIELD_DEF -> ANNOTATION_FIELD_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   `--IDENT -> String
  |--IDENT -> someField
  |--LPAREN -> (
  |--RPAREN -> )
  |--LITERAL_DEFAULT -> default
  |   `--EXPR -> EXPR
  |       `--STRING_LITERAL -> "Hello world"
  `--SEMI -> ;
 

See Also:

• JSR201
• MODIFIERS
• TYPE
• LITERAL_DEFAULT
• Constant Field Values

ANNOTATIONS

public static final int ANNOTATIONS

A collection of annotations on a package or enum constant. A collections of annotations will only occur on these nodes as all other nodes that may be qualified with an annotation can be qualified with any other modifier and hence these annotations would be contained in a MODIFIERS node.

For example:

     @MyAnnotation package blah;
 

parses as:

 PACKAGE_DEF -> package
  |--ANNOTATIONS -> ANNOTATIONS
  |   `--ANNOTATION -> ANNOTATION
  |       |--AT -> @
  |       `--IDENT -> MyAnnotation
  |--IDENT -> blah
  `--SEMI -> ;
 

See Also:

• JSR201
• ANNOTATION
• AT
• IDENT
• Constant Field Values

ANNOTATION

public static final int ANNOTATION

An annotation of a package, type, field, parameter or variable. An annotation may occur anywhere modifiers occur (it is a type of modifier) and may also occur prior to a package definition. The notable children are: The annotation name and either a single default annotation value or a sequence of name value pairs. Annotation values may also be annotations themselves.

For example:

     @MyAnnotation(someField1 = "Hello",
                    someField2 = @SomeOtherAnnotation)
 

parses as:

 ANNOTATION -> ANNOTATION
  |--AT -> @
  |--IDENT -> MyAnnotation
  |--LPAREN -> (
  |--ANNOTATION_MEMBER_VALUE_PAIR -> ANNOTATION_MEMBER_VALUE_PAIR
  |   |--IDENT -> someField1
  |   |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--STRING_LITERAL -> "Hello"
  |--COMMA -> ,
  |--ANNOTATION_MEMBER_VALUE_PAIR -> ANNOTATION_MEMBER_VALUE_PAIR
  |   |--IDENT -> someField2
  |   |--ASSIGN -> =
  |   `--ANNOTATION -> ANNOTATION
  |       |--AT -> @
  |       `--IDENT -> SomeOtherAnnotation
  `--RPAREN -> )
 

See Also:

• JSR201
• MODIFIERS
• IDENT
• ANNOTATION_MEMBER_VALUE_PAIR
• Constant Field Values

ANNOTATION_MEMBER_VALUE_PAIR

public static final int ANNOTATION_MEMBER_VALUE_PAIR

An initialization of an annotation member with a value. Its children are the name of the member, the assignment literal and the (compile-time constant conditional expression) value.

For example:

 @Annotation(
     value="123"
 )
 

parses as:

 ANNOTATION -> ANNOTATION
  |--AT -> @
  |--IDENT -> Annotation
  |--LPAREN -> (
  |--ANNOTATION_MEMBER_VALUE_PAIR -> ANNOTATION_MEMBER_VALUE_PAIR
  |   |--IDENT -> value
  |   |--ASSIGN -> =
  |   `--EXPR -> EXPR
  |       `--STRING_LITERAL -> "123"
  `--RPAREN -> )
 

See Also:

• JSR201
• ANNOTATION
• IDENT
• Constant Field Values

ANNOTATION_ARRAY_INIT

public static final int ANNOTATION_ARRAY_INIT

An annotation array member initialization. Initializers can not be nested. An initializer may be present as a default to an annotation member, as the single default value to an annotation (e.g. @Annotation({1,2})) or as the value of an annotation member value pair.

For example:

 @Annotation({1, 2})
 

parses as:

 ANNOTATION -> ANNOTATION
  |--AT -> @
  |--IDENT -> Annotation
  |--LPAREN -> (
  |--ANNOTATION_ARRAY_INIT -> {
  |   |--EXPR -> EXPR
  |   |   `--NUM_INT -> 1
  |   |--COMMA -> ,
  |   |--EXPR -> EXPR
  |   |   `--NUM_INT -> 2
  |   `--RCURLY -> }
  `--RPAREN -> )
 

See Also:

• JSR201
• ANNOTATION
• IDENT
• ANNOTATION_MEMBER_VALUE_PAIR
• Constant Field Values

TYPE_PARAMETERS

public static final int TYPE_PARAMETERS

A list of type parameters to a class, interface or method definition. Children are LT, at least one TYPE_PARAMETER, zero or more of: a COMMAs followed by a single TYPE_PARAMETER and a final GT.

For example:

 public class MyClass<A, B> {

 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_CLASS -> class
 |--IDENT -> MyClass
 |--TYPE_PARAMETERS -> TYPE_PARAMETERS
 |   |--GENERIC_START -> <
 |   |--TYPE_PARAMETER -> TYPE_PARAMETER
 |   |   `--IDENT -> A
 |   |--COMMA -> ,
 |   |--TYPE_PARAMETER -> TYPE_PARAMETER
 |   |   `--IDENT -> B
 |   `--GENERIC_END -> >
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• Generic Classes and Type Parameters
• GENERIC_START
• GENERIC_END
• TYPE_PARAMETER
• COMMA
• Constant Field Values

TYPE_PARAMETER

public static final int TYPE_PARAMETER

A type parameter to a class, interface or method definition. Children are the type name and an optional TYPE_UPPER_BOUNDS.

For example:

 public class MyClass <A extends Collection> {

 }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_CLASS -> class
 |--IDENT -> MyClass
 |--TYPE_PARAMETERS -> TYPE_PARAMETERS
 |   |--GENERIC_START -> <
 |   |--TYPE_PARAMETER -> TYPE_PARAMETER
 |   |   |--IDENT -> A
 |   |   `--TYPE_UPPER_BOUNDS -> extends
 |   |       `--IDENT -> Collection
 |   `--GENERIC_END -> >
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

See Also:

• Generic Classes and Type Parameters
• IDENT
• WILDCARD_TYPE
• TYPE_UPPER_BOUNDS
• Constant Field Values

TYPE_ARGUMENTS

public static final int TYPE_ARGUMENTS

A list of type arguments to a type reference or a method/ctor invocation. Children are GENERIC_START, at least one TYPE_ARGUMENT, zero or more of a COMMAs followed by a single TYPE_ARGUMENT, and a final GENERIC_END.

For example:

     public Collection<?> a;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--TYPE -> TYPE
  |   |--IDENT -> Collection
  |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |       |--GENERIC_START -> <
  |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |       |   `--WILDCARD_TYPE -> ?
  |       `--GENERIC_END -> >
  |--IDENT -> a
  `--SEMI -> ;
 

See Also:

• GENERIC_START
• GENERIC_END
• TYPE_ARGUMENT
• COMMA
• Constant Field Values

TYPE_ARGUMENT

public static final int TYPE_ARGUMENT

A type arguments to a type reference or a method/ctor invocation. Children are either: type name or wildcard type with possible type upper or lower bounds.

For example:

List<? super List> list;

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--IDENT -> List
  |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |       |--GENERIC_START -> <
  |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |       |   |--WILDCARD_TYPE -> ?
  |       |   `--TYPE_LOWER_BOUNDS -> super
  |       |       `--IDENT -> List
  |       `--GENERIC_END -> >
  |--IDENT -> list
  `--SEMI -> ;
 

See Also:

• Generic Classes and Type Parameters
• WILDCARD_TYPE
• TYPE_UPPER_BOUNDS
• TYPE_LOWER_BOUNDS
• Constant Field Values

WILDCARD_TYPE

public static final int WILDCARD_TYPE

The type that refers to all types. This node has no children.

For example:

 List<?> list;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   |--IDENT -> List
 |   |   |`--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
 |   |        |--GENERIC_START -> <
 |   |        |--TYPE_ARGUMENT -> TYPE_ARGUMENT
 |   |        |  `--WILDCARD_TYPE -> ?
 |   |        `--GENERIC_END -> >
 |   `--IDENT -> list
 |--SEMI -> ;
 

See Also:

• Generic Classes and Type Parameters
• TYPE_ARGUMENT
• TYPE_UPPER_BOUNDS
• TYPE_LOWER_BOUNDS
• Constant Field Values

TYPE_UPPER_BOUNDS

public static final int TYPE_UPPER_BOUNDS

An upper bounds on a wildcard type argument or type parameter. This node has one child - the type that is being used for the bounding.

For example:

List<? extends Number> list;

parses as:

 --VARIABLE_DEF -> VARIABLE_DEF
  |--MODIFIERS -> MODIFIERS
  |--TYPE -> TYPE
  |   |--IDENT -> List
  |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
  |       |--GENERIC_START -> <
  |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
  |       |   |--WILDCARD_TYPE -> ?
  |       |   `--TYPE_UPPER_BOUNDS -> extends
  |       |       `--IDENT -> Number
  |       `--GENERIC_END -> >
  |--IDENT -> list
  `--SEMI -> ;
  

See Also:

• Generic Classes and Type Parameters
• TYPE_PARAMETER
• TYPE_ARGUMENT
• WILDCARD_TYPE
• Constant Field Values

TYPE_LOWER_BOUNDS

public static final int TYPE_LOWER_BOUNDS

A lower bounds on a wildcard type argument. This node has one child - the type that is being used for the bounding.

For example:

List<? super Integer> list;

parses as:

  --VARIABLE_DEF -> VARIABLE_DEF
     |--MODIFIERS -> MODIFIERS
     |--TYPE -> TYPE
     |   |--IDENT -> List
     |   `--TYPE_ARGUMENTS -> TYPE_ARGUMENTS
     |       |--GENERIC_START -> <
     |       |--TYPE_ARGUMENT -> TYPE_ARGUMENT
     |       |   |--WILDCARD_TYPE -> ?
     |       |   `--TYPE_LOWER_BOUNDS -> super
     |       |       `--IDENT -> Integer
     |       `--GENERIC_END -> >
     |--IDENT -> list
     `--SEMI -> ;
  

See Also:

• Generic Classes and Type Parameters
• TYPE_ARGUMENT
• WILDCARD_TYPE
• Constant Field Values

AT

public static final int AT

An @ symbol - signifying an annotation instance or the prefix to the interface literal signifying the definition of an annotation declaration.

For example:

 @Deprecated
 private int value;
 

parses as:

 VARIABLE_DEF -> VARIABLE_DEF
 |--MODIFIERS -> MODIFIERS
 |  |--ANNOTATION -> ANNOTATION
 |  |  |--AT -> @
 |  |  `--IDENT -> Deprecated
 |  `--LITERAL_PRIVATE -> private
 |--TYPE -> TYPE
 |  `--LITERAL_INT -> int
 |--IDENT -> value
 `--SEMI -> ;
 

See Also:

• JSR201
• Constant Field Values

ELLIPSIS

public static final int ELLIPSIS

A triple dot for variable-length parameters. This token only ever occurs in a parameter declaration immediately after the type of the parameter.

For example:

  public void myShape(int... dimension) {

  }
 

parses as:

 METHOD_DEF -> METHOD_DEF
   |--MODIFIERS -> MODIFIERS
   |   `--LITERAL_PUBLIC -> public
   |--TYPE -> TYPE
   |   `--LITERAL_VOID -> void
   |--IDENT -> myShape
   |--LPAREN -> (
   |--PARAMETERS -> PARAMETERS
   |   `--PARAMETER_DEF -> PARAMETER_DEF
   |       |--MODIFIERS -> MODIFIERS
   |       |--TYPE -> TYPE
   |       |   `--LITERAL_INT -> int
   |       |--ELLIPSIS -> ...
   |       `--IDENT -> dimension
   |--RPAREN -> )
   `--SLIST -> {
       `--RCURLY -> }
 

See Also:

• JSR201
• Constant Field Values

TYPE_EXTENSION_AND

public static final int TYPE_EXTENSION_AND

The & symbol when used to extend a generic upper or lower bounds constrain or a type cast expression with an additional interface.

Generic type bounds extension: class Comparable<T extends Serializable & CharSequence>

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |--LITERAL_CLASS -> class
 |--IDENT -> Comparable
 |--TYPE_PARAMETERS -> TYPE_PARAMETERS
     |--GENERIC_START -> <
     |--TYPE_PARAMETER -> TYPE_PARAMETER
     |   |--IDENT -> T
     |   `--TYPE_UPPER_BOUNDS -> extends
     |       |--IDENT -> Serializable
     |       |--TYPE_EXTENSION_AND -> &
     |       `--IDENT -> CharSequence
     `--GENERIC_END -> >
 

Type cast extension: return (Serializable & CharSequence) null;

 --LITERAL_RETURN -> return
    |--EXPR -> EXPR
    |   `--TYPECAST -> (
    |       |--TYPE -> TYPE
    |       |   `--IDENT -> Serializable
    |       |--TYPE_EXTENSION_AND -> &
    |       |--TYPE -> TYPE
    |       |   `--IDENT -> CharSequence
    |       |--RPAREN -> )
    |       `--LITERAL_NULL -> null
    `--SEMI -> ;
 

See Also:

• EXTENDS_CLAUSE
• TYPECAST
• Java Language Specification, §4.4
• Java Language Specification, §15.16
• Constant Field Values

GENERIC_START

public static final int GENERIC_START

A < symbol signifying the start of type arguments or type parameters.

For example:

 class Test<T> {}
 

parses as:

 CLASS_DEF -> CLASS_DEF
  |--MODIFIERS -> MODIFIERS
  |--LITERAL_CLASS -> class
  |--IDENT -> Test
  |--TYPE_PARAMETERS -> TYPE_PARAMETERS
  |   |--GENERIC_START -> <
  |   |--TYPE_PARAMETER -> TYPE_PARAMETER
  |   |   `--IDENT -> T
  |   `--GENERIC_END -> >
  `--OBJBLOCK -> OBJBLOCK
      |--LCURLY -> {
      `--RCURLY -> }
 

See Also:

• MODIFIERS
• IDENT
• OBJBLOCK
• TYPE_PARAMETERS
• GENERIC_END
• Constant Field Values

GENERIC_END

public static final int GENERIC_END

A > symbol signifying the end of type arguments or type parameters.

For example:

 class Test<T> {}
 

parses as:

 CLASS_DEF -> CLASS_DEF
  |--MODIFIERS -> MODIFIERS
  |--LITERAL_CLASS -> class
  |--IDENT -> Test
  |--TYPE_PARAMETERS -> TYPE_PARAMETERS
  |   |--GENERIC_START -> <
  |   |--TYPE_PARAMETER -> TYPE_PARAMETER
  |   |   `--IDENT -> T
  |   `--GENERIC_END -> >
  `--OBJBLOCK -> OBJBLOCK
      |--LCURLY -> {
      `--RCURLY -> }
 

See Also:

• MODIFIERS
• IDENT
• OBJBLOCK
• TYPE_PARAMETERS
• GENERIC_START
• Constant Field Values

LAMBDA

public static final int LAMBDA

Special lambda symbol ->.

For example:

 numbers.forEach((n) -> System.out.println(n));
 

parses as:

 METHOD_CALL -> (
  |--DOT -> .
  |   |--IDENT -> numbers
  |   `--IDENT -> forEach
  |--ELIST -> ELIST
  |   `--LAMBDA -> ->
  |       |--LPAREN -> (
  |       |--PARAMETERS -> PARAMETERS
  |       |   `--PARAMETER_DEF -> PARAMETER_DEF
  |       |       |--MODIFIERS -> MODIFIERS
  |       |       |--TYPE -> TYPE
  |       |       `--IDENT -> n
  |       |--RPAREN -> )
  |       `--EXPR -> EXPR
  |           `--METHOD_CALL -> (
  |               |--DOT -> .
  |               |   |--DOT -> .
  |               |   |   |--IDENT -> System
  |               |   |   `--IDENT -> out
  |               |   `--IDENT -> println
  |               |--ELIST -> ELIST
  |               |   `--EXPR -> EXPR
  |               |       `--IDENT -> n
  |               `--RPAREN -> )
  `--RPAREN -> )
 

See Also:

• Constant Field Values

SINGLE_LINE_COMMENT

public static final int SINGLE_LINE_COMMENT

Beginning of single-line comment: '//'.

 SINGLE_LINE_COMMENT -> //
  `--COMMENT_CONTENT -> \r\n
 

For example:

 // Comment content
 

parses as:

 SINGLE_LINE_COMMENT -> //
  `--COMMENT_CONTENT ->  Comment Content\n
 

See Also:

• Constant Field Values

BLOCK_COMMENT_BEGIN

public static final int BLOCK_COMMENT_BEGIN

Beginning of block comment: '/*'.

For example:

 /* Comment content
 */
 

parses as:

 --BLOCK_COMMENT_BEGIN -> /*
    |--COMMENT_CONTENT ->  Comment content\r\n
    `--BLOCK_COMMENT_END -> */
 

See Also:

• Constant Field Values

BLOCK_COMMENT_END

public static final int BLOCK_COMMENT_END

End of block comment: '*/'.

For example:

 /*comment*/
 

parses as:

 BLOCK_COMMENT_BEGIN -> /*
  |--COMMENT_CONTENT -> comment
  `--BLOCK_COMMENT_END -> */
 

See Also:

• Constant Field Values

COMMENT_CONTENT

public static final int COMMENT_CONTENT

Text of single-line or block comment.

For example:

 //this is single-line comment

 /*
 this is multiline comment
 */
 

parses as:

 |--SINGLE_LINE_COMMENT -> //
 |   `--COMMENT_CONTENT -> this is single-line comment\n
 |--BLOCK_COMMENT_BEGIN -> /*
 |   |--COMMENT_CONTENT -> \n\t\t\tthis is multiline comment\n\t\t
 |   `--BLOCK_COMMENT_END -> */
 

See Also:

• Constant Field Values

PATTERN_VARIABLE_DEF

public static final int PATTERN_VARIABLE_DEF

A pattern variable definition; when conditionally matched, this variable is assigned with the defined type.

For example:

 if (obj instanceof String str) { }
 

parses as:

 LITERAL_IF -> if
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--LITERAL_INSTANCEOF -> instanceof
  |       |--IDENT -> obj
  |       `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
  |           |--TYPE -> TYPE
  |           |   `--IDENT -> String
  |           `--IDENT -> str
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

Since:

8.35

See Also:

• LITERAL_INSTANCEOF
• Constant Field Values

LITERAL_RECORD

public static final int LITERAL_RECORD

The record keyword. This element appears as part of a record declaration.

For example:

 public record MyRecord () {

 }
 

parses as:

 RECORD_DEF -> RECORD_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_RECORD -> record
 |--IDENT -> MyRecord
 |--LPAREN -> (
 |--RECORD_COMPONENTS -> RECORD_COMPONENTS
 |--RPAREN -> )
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

Since:

8.35

See Also:

• Constant Field Values

RECORD_DEF

public static final int RECORD_DEF

A declaration of a record specifies a name, a header, and a body. The header lists the components of the record, which are the variables that make up its state.

For example:

 public record MyRecord () {

 }
 

parses as:

 RECORD_DEF -> RECORD_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_RECORD -> record
 |--IDENT -> MyRecord
 |--LPAREN -> (
 |--RECORD_COMPONENTS -> RECORD_COMPONENTS
 |--RPAREN -> )
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

Since:

8.35

See Also:

• Constant Field Values

RECORD_COMPONENTS

public static final int RECORD_COMPONENTS

Record components are a (possibly empty) list containing the components of a record, which are the variables that make up its state.

For example:

 public record myRecord (Comp x, Comp y) { }
 

parses as:

 RECORD_DEF -> RECORD_DEF
  |--MODIFIERS -> MODIFIERS
  |   `--LITERAL_PUBLIC -> public
  |--LITERAL_RECORD -> record
  |--IDENT -> myRecord
  |--LPAREN -> (
  |--RECORD_COMPONENTS -> RECORD_COMPONENTS
  |   |--RECORD_COMPONENT_DEF -> RECORD_COMPONENT_DEF
  |   |   |--ANNOTATIONS -> ANNOTATIONS
  |   |   |--TYPE -> TYPE
  |   |   |   `--IDENT -> Comp
  |   |   `--IDENT -> x
  |   |--COMMA -> ,
  |   `--RECORD_COMPONENT_DEF -> RECORD_COMPONENT_DEF
  |       |--ANNOTATIONS -> ANNOTATIONS
  |       |--TYPE -> TYPE
  |       |   `--IDENT -> Comp
  |       `--IDENT -> y
  |--RPAREN -> )
  `--OBJBLOCK -> OBJBLOCK
      |--LCURLY -> {
      `--RCURLY -> }
 

Since:

8.36

See Also:

• Constant Field Values

RECORD_COMPONENT_DEF

public static final int RECORD_COMPONENT_DEF

A record component is a variable that comprises the state of a record. Record components have annotations (possibly), a type definition, and an identifier. They can also be of variable arity ('...').

For example:

 public record MyRecord(Comp x, Comp... comps) {

 }
 

parses as:

 RECORD_DEF -> RECORD_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_PUBLIC -> public
 |--LITERAL_RECORD -> record
 |--IDENT -> MyRecord
 |--LPAREN -> (
 |--RECORD_COMPONENTS -> RECORD_COMPONENTS
 |   |--RECORD_COMPONENT_DEF -> RECORD_COMPONENT_DEF
 |   |   |--ANNOTATIONS -> ANNOTATIONS
 |   |   |--TYPE -> TYPE
 |   |   |   `--IDENT -> Comp
 |   |   `--IDENT -> x
 |   |--COMMA -> ,
 |   `--RECORD_COMPONENT_DEF -> RECORD_COMPONENT_DEF
 |       |--ANNOTATIONS -> ANNOTATIONS
 |       |--TYPE -> TYPE
 |       |   `--IDENT -> Comp
 |       |--ELLIPSIS -> ...
 |       `--IDENT -> comps
 |--RPAREN -> )
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

Since:

8.36

See Also:

• Constant Field Values

COMPACT_CTOR_DEF

public static final int COMPACT_CTOR_DEF

A compact canonical constructor eliminates the list of formal parameters; they are declared implicitly.

For example:

 public record myRecord () {
     public myRecord{}
 }
 

parses as:

 RECORD_DEF
 |--MODIFIERS
 |   `--LITERAL_PUBLIC (public)
 |--LITERAL_RECORD (record)
 |--IDENT (myRecord)
 |--LPAREN (()
 |--RECORD_COMPONENTS
 |--RPAREN ())
 `--OBJBLOCK
     |--LCURLY ({)
     |--COMPACT_CTOR_DEF
     |   |--MODIFIERS
     |   |   `--LITERAL_PUBLIC (public)
     |   |--IDENT (myRecord)
     |   `--SLIST ({)
     |       `--RCURLY (})
     `--RCURLY (})
 

Since:

8.36

See Also:

• Constant Field Values

TEXT_BLOCK_LITERAL_BEGIN

public static final int TEXT_BLOCK_LITERAL_BEGIN

Text blocks are a new feature added to to Java SE 15 and later that will make writing multi-line strings much easier and cleaner. Beginning of a Java 15 Text Block literal, delimited by three double quotes.

For example:

         String hello = """
                 Hello, world!
                 """;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--IDENT -> String
 |   |--IDENT -> hello
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--TEXT_BLOCK_LITERAL_BEGIN -> """
 |               |--TEXT_BLOCK_CONTENT -> \n                Hello, world!\n
 |               `--TEXT_BLOCK_LITERAL_END -> """
 `--SEMI -> ;
 

Since:

8.36

See Also:

• Constant Field Values

TEXT_BLOCK_CONTENT

public static final int TEXT_BLOCK_CONTENT

Content of a Java 15 text block. This is a sequence of characters, possibly escaped with '\'. Actual line terminators are represented by '\n'.

For example:

         String hello = """
                 Hello, world!
                 """;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--IDENT -> String
 |   |--IDENT -> hello
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--TEXT_BLOCK_LITERAL_BEGIN -> """
 |               |--TEXT_BLOCK_CONTENT -> \n                Hello, world!\n
 |               `--TEXT_BLOCK_LITERAL_END -> """
 `--SEMI -> ;
 

Since:

8.36

See Also:

• Constant Field Values

TEXT_BLOCK_LITERAL_END

public static final int TEXT_BLOCK_LITERAL_END

End of a Java 15 text block literal, delimited by three double quotes.

For example:

         String hello = """
                 Hello, world!
                 """;
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--IDENT -> String
 |   |--IDENT -> hello
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--TEXT_BLOCK_LITERAL_BEGIN -> """
 |               |--TEXT_BLOCK_CONTENT -> \n                Hello, world!\n
 |               `--TEXT_BLOCK_LITERAL_END -> """
 `--SEMI -> ;
 

Since:

8.36

See Also:

• Constant Field Values

LITERAL_YIELD

public static final int LITERAL_YIELD

The yield keyword. This element appears as part of a yield statement.

For example:

 int yield = 0; // not a keyword here
 return switch (mode) {
    case "a", "b":
        yield 1;
    default:
        yield - 1;
 };
 

parses as:

 |--VARIABLE_DEF -> VARIABLE_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--TYPE -> TYPE
 |   |   `--LITERAL_INT -> int
 |   |--IDENT -> yield
 |   `--ASSIGN -> =
 |       `--EXPR -> EXPR
 |           `--NUM_INT -> 0
 |--SEMI -> ;
 |--LITERAL_RETURN -> return
 |   |--EXPR -> EXPR
 |   |   `--LITERAL_SWITCH -> switch
 |   |       |--LPAREN -> (
 |   |       |--EXPR -> EXPR
 |   |       |   `--IDENT -> mode
 |   |       |--RPAREN -> )
 |   |       |--LCURLY -> {
 |   |       |--CASE_GROUP -> CASE_GROUP
 |   |       |   |--LITERAL_CASE -> case
 |   |       |   |   |--EXPR -> EXPR
 |   |       |   |   |   `--STRING_LITERAL -> "a"
 |   |       |   |   |--COMMA -> ,
 |   |       |   |   |--EXPR -> EXPR
 |   |       |   |   |   `--STRING_LITERAL -> "b"
 |   |       |   |   `--COLON -> :
 |   |       |   `--SLIST -> SLIST
 |   |       |       `--LITERAL_YIELD -> yield
 |   |       |           |--EXPR -> EXPR
 |   |       |           |   `--NUM_INT -> 1
 |   |       |           `--SEMI -> ;
 |   |       |--CASE_GROUP -> CASE_GROUP
 |   |       |   |--LITERAL_DEFAULT -> default
 |   |       |   |   `--COLON -> :
 |   |       |   `--SLIST -> SLIST
 |   |       |       `--LITERAL_YIELD -> yield
 |   |       |           |--EXPR -> EXPR
 |   |       |           |   `--UNARY_MINUS -> -
 |   |       |           |       `--NUM_INT -> 1
 |   |       |           `--SEMI -> ;
 |   |       `--RCURLY -> }
 |   `--SEMI -> ;
 

Since:

8.36

See Also:

• LITERAL_SWITCH
• CASE_GROUP
• SLIST
• SWITCH_RULE
• Java Language Specification, §14.21
• Constant Field Values

SWITCH_RULE

public static final int SWITCH_RULE

Switch Expressions.

For example:

 return switch (day) {
     case SAT, SUN -> "Weekend";
     default -> "Working day";
 };
 

parses as:

 LITERAL_RETURN -> return
  |--EXPR -> EXPR
  |   `--LITERAL_SWITCH -> switch
  |       |--LPAREN -> (
  |       |--EXPR -> EXPR
  |       |   `--IDENT -> day
  |       |--RPAREN -> )
  |       |--LCURLY -> {
  |       |--SWITCH_RULE -> SWITCH_RULE
  |       |   |--LITERAL_CASE -> case
  |       |   |   |--EXPR -> EXPR
  |       |   |   |   `--IDENT -> SAT
  |       |   |   |--COMMA -> ,
  |       |   |   `--EXPR -> EXPR
  |       |   |       `--IDENT -> SUN
  |       |   |--LAMBDA -> ->
  |       |   |--EXPR -> EXPR
  |       |   |   `--STRING_LITERAL -> "Weekend"
  |       |   `--SEMI -> ;
  |       |--SWITCH_RULE -> SWITCH_RULE
  |       |   |--LITERAL_DEFAULT -> default
  |       |   |--LAMBDA -> ->
  |       |   |--EXPR -> EXPR
  |       |   |   `--STRING_LITERAL -> "Working day"
  |       |   `--SEMI -> ;
  |       `--RCURLY -> }
  `--SEMI -> ;
 

Since:

8.36

See Also:

• LITERAL_CASE
• LITERAL_DEFAULT
• LITERAL_SWITCH
• LITERAL_YIELD
• Java Language Specification, §14.21
• Constant Field Values

LITERAL_NON_SEALED

public static final int LITERAL_NON_SEALED

The non-sealed keyword. This element appears as part of a class or interface declaration.

For example:

 non-sealed class Square extends Rectangle { }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   `--LITERAL_NON_SEALED -> non-sealed
 |--LITERAL_CLASS -> class
 |--IDENT -> Square
 |--EXTENDS_CLAUSE -> extends
 |   `--IDENT -> Rectangle
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

Since:

8.42

See Also:

• Java Language Specification, §8.1.1.2
• MODIFIERS
• Constant Field Values

LITERAL_SEALED

public static final int LITERAL_SEALED

The sealed restricted identifier. This element appears as part of a class or interface declaration.

For example:

 public sealed class Shape permits Circle, Square, Rectangle { }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_PUBLIC -> public
 |   `--LITERAL_SEALED -> sealed
 |--LITERAL_CLASS -> class
 |--IDENT -> Shape
 |--PERMITS_CLAUSE -> permits
 |   |--IDENT -> Circle
 |   |--COMMA -> ,
 |   |--IDENT -> Square
 |   |--COMMA -> ,
 |   `--IDENT -> Rectangle
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

Since:

8.42

See Also:

• Java Language Specification, §8.1.1.2
• MODIFIERS
• Constant Field Values

LITERAL_PERMITS

public static final int LITERAL_PERMITS

The permits restricted identifier. This element appears as part of a class or interface declaration.

For example:

 public sealed class Shape permits Circle, Square, Rectangle { }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_PUBLIC -> public
 |   `--LITERAL_SEALED -> sealed
 |--LITERAL_CLASS -> class
 |--IDENT -> Shape
 |--PERMITS_CLAUSE -> permits
 |   |--IDENT -> Circle
 |   |--COMMA -> ,
 |   |--IDENT -> Square
 |   |--COMMA -> ,
 |   `--IDENT -> Rectangle
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

Since:

8.42

See Also:

• Java Language Specification, §9.1.4
• MODIFIERS
• Constant Field Values

PERMITS_CLAUSE

public static final int PERMITS_CLAUSE

A permits clause. A permits clause's children are a comma separated list of one or more identifiers.

For example:

 public sealed class Shape permits Circle, Square, Rectangle { }
 

parses as:

 CLASS_DEF -> CLASS_DEF
 |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_PUBLIC -> public
 |   `--LITERAL_SEALED -> sealed
 |--LITERAL_CLASS -> class
 |--IDENT -> Shape
 |--PERMITS_CLAUSE -> permits
 |   |--IDENT -> Circle
 |   |--COMMA -> ,
 |   |--IDENT -> Square
 |   |--COMMA -> ,
 |   `--IDENT -> Rectangle
 `--OBJBLOCK -> OBJBLOCK
     |--LCURLY -> {
     `--RCURLY -> }
 

Since:

8.42

See Also:

• Java Language Specification, §9.1.4
• MODIFIERS
• CLASS_DEF
• INTERFACE_DEF
• COMMA
• IDENT
• Constant Field Values

PATTERN_DEF

public static final int PATTERN_DEF

A pattern definition, excluding simple type pattern (pattern variable) definition such as if (o instanceof Integer i){}. Pattern definitions appear as operands of statements and expressions.

For example:

 switch(o) {
     case String s when s.length() > 4: // guarded pattern, `PATTERN_DEF`
         break;
     case String s: // type pattern, no `PATTERN_DEF`
         break;
 }
 

parses as:

 LITERAL_SWITCH -> switch
 |   |--LPAREN -> (
 |   |--EXPR -> EXPR
 |   |   `--IDENT -> o
 |   |--RPAREN -> )
 |   |--LCURLY -> {
 |   |--CASE_GROUP -> CASE_GROUP
 |   |   |--LITERAL_CASE -> case
 |   |   |   |--PATTERN_DEF -> PATTERN_DEF
 |   |   |   |   `--LITERAL_WHEN -> when
 |   |   |   |       |--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |   |   |   |       |   |--MODIFIERS -> MODIFIERS
 |   |   |   |       |   |--TYPE -> TYPE
 |   |   |   |       |   |   `--IDENT -> String
 |   |   |   |       |   `--IDENT -> s
 |   |   |   |       `--GT -> >
 |   |   |   |           |--METHOD_CALL -> (
 |   |   |   |           |   |--DOT -> .
 |   |   |   |           |   |   |--IDENT -> s
 |   |   |   |           |   |   `--IDENT -> length
 |   |   |   |           |   |--ELIST -> ELIST
 |   |   |   |           |   `--RPAREN -> )
 |   |   |   |           `--NUM_INT -> 4
 |   |   |   `--COLON -> :
 |   |   `--SLIST -> SLIST
 |   |       `--LITERAL_BREAK -> break
 |   |           `--SEMI -> ;
 |   |--CASE_GROUP -> CASE_GROUP
 |   |   |--LITERAL_CASE -> case
 |   |   |   |--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |   |   |   |   |--MODIFIERS -> MODIFIERS
 |   |   |   |   |--TYPE -> TYPE
 |   |   |   |   |   `--IDENT -> String
 |   |   |   |   `--IDENT -> s
 |   |   |   `--COLON -> :
 |   |   `--SLIST -> SLIST
 |   |       `--LITERAL_BREAK -> break
 |   |           `--SEMI -> ;
 |   `--RCURLY -> }
 `--RCURLY -> }
 

Since:

9.3

See Also:

• Java Language Specification, §14.30
• LITERAL_SWITCH
• PATTERN_VARIABLE_DEF
• LITERAL_INSTANCEOF
• Constant Field Values

LITERAL_WHEN

public static final int LITERAL_WHEN

A when clause. Appears as part of a switch label in a guarded pattern definition.

For example:

 return switch (o) {
     case Integer i when i >= 0 -> i;
     default -> 2;
 };
 

parses as:

 LITERAL_RETURN -> return
  `--EXPR -> EXPR
      `--LITERAL_SWITCH -> switch
          |--LPAREN -> (
          |--EXPR -> EXPR
          |   `--IDENT -> o
          |--RPAREN -> )
          |--LCURLY -> {
          |--SWITCH_RULE -> SWITCH_RULE
          |   |--LITERAL_CASE -> case
          |   |   `--PATTERN_DEF -> PATTERN_DEF
          |   |       `--LITERAL_WHEN -> when
          |   |           |--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
          |   |           |   |--MODIFIERS -> MODIFIERS
          |   |           |   |--TYPE -> TYPE
          |   |           |   |   `--IDENT -> Integer
          |   |           |   `--IDENT -> i
          |   |           `--GE -> >=
          |   |               |--IDENT -> i
          |   |               `--NUM_INT -> 0
          |   |--LAMBDA -> ->
          |   |--EXPR -> EXPR
          |   |   `--IDENT -> i
          |   `--SEMI -> ;
          |--SWITCH_RULE -> SWITCH_RULE
          |   |--LITERAL_DEFAULT -> default
          |   |--LAMBDA -> ->
          |   |--EXPR -> EXPR
          |   |   `--NUM_INT -> 2
          |   `--SEMI -> ;
          `--RCURLY -> }
 

Since:

10.7.0

See Also:

• Java Language Specification, §14.30
• LITERAL_SWITCH
• PATTERN_VARIABLE_DEF
• LITERAL_INSTANCEOF
• SWITCH_RULE
• Constant Field Values

RECORD_PATTERN_DEF

public static final int RECORD_PATTERN_DEF

A record pattern definition. A record pattern consists of a type, a (possibly empty) record component pattern list which is used to match against the corresponding record components, and an optional identifier. Appears as part of an instanceof expression or a case label in a switch.

For example:

 record R(Object o){}
 if (o instanceof R(String s) myRecord) {}
 switch (o) {
     case R(String s) myRecord -> {}
 }
 

parses as:

 |--RECORD_DEF -> RECORD_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_RECORD -> record
 |   |--IDENT -> R
 |   |--LPAREN -> (
 |   |--RECORD_COMPONENTS -> RECORD_COMPONENTS
 |   |   `--RECORD_COMPONENT_DEF -> RECORD_COMPONENT_DEF
 |   |       |--ANNOTATIONS -> ANNOTATIONS
 |   |       |--TYPE -> TYPE
 |   |       |   `--IDENT -> Object
 |   |       `--IDENT -> o
 |   |--RPAREN -> )
 |   `--OBJBLOCK -> OBJBLOCK
 |       |--LCURLY -> {
 |       `--RCURLY -> }
 |--LITERAL_IF -> if
 |   |--LPAREN -> (
 |   |--EXPR -> EXPR
 |   |   `--LITERAL_INSTANCEOF -> instanceof
 |   |       |--IDENT -> o
 |   |       `--RECORD_PATTERN_DEF -> RECORD_PATTERN_DEF
 |   |           |--MODIFIERS -> MODIFIERS
 |   |           |--TYPE -> TYPE
 |   |           |   `--IDENT -> R
 |   |           |--LPAREN -> (
 |   |           |--RECORD_PATTERN_COMPONENTS -> RECORD_PATTERN_COMPONENTS
 |   |           |   `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |   |           |       |--MODIFIERS -> MODIFIERS
 |   |           |       |--TYPE -> TYPE
 |   |           |       |   `--IDENT -> String
 |   |           |       `--IDENT -> s
 |   |           |--RPAREN -> )
 |   |           `--IDENT -> myRecord
 |   |--RPAREN -> )
 |   `--SLIST -> {
 |       `--RCURLY -> }
 |--LITERAL_SWITCH -> switch
 |   |--LPAREN -> (
 |   |--EXPR -> EXPR
 |   |   `--IDENT -> o
 |   |--RPAREN -> )
 |   |--LCURLY -> {
 |   |--SWITCH_RULE -> SWITCH_RULE
 |   |   |--LITERAL_CASE -> case
 |   |   |   `--RECORD_PATTERN_DEF -> RECORD_PATTERN_DEF
 |   |   |       |--MODIFIERS -> MODIFIERS
 |   |   |       |--TYPE -> TYPE
 |   |   |       |   `--IDENT -> R
 |   |   |       |--LPAREN -> (
 |   |   |       |--RECORD_PATTERN_COMPONENTS -> RECORD_PATTERN_COMPONENTS
 |   |   |       |   `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |   |   |       |       |--MODIFIERS -> MODIFIERS
 |   |   |       |       |--TYPE -> TYPE
 |   |   |       |       |   `--IDENT -> String
 |   |   |       |       `--IDENT -> s
 |   |   |       |--RPAREN -> )
 |   |   |       `--IDENT -> myRecord
 |   |   |--LAMBDA -> ->
 |   |   `--SLIST -> {
 |   |       `--RCURLY -> }
 |   `--RCURLY -> }
 `--RCURLY -> }
 

Since:

10.12.0

See Also:

• JEP 405: Record Patterns
• LITERAL_WHEN
• PATTERN_VARIABLE_DEF
• LITERAL_INSTANCEOF
• SWITCH_RULE
• Constant Field Values

RECORD_PATTERN_COMPONENTS

public static final int RECORD_PATTERN_COMPONENTS

A (possibly empty) record component pattern list which is used to match against the corresponding record components. Appears as part of a record pattern definition.

For example:

 record R(Object o){}
 if (o instanceof R(String myComponent)) {}
 switch (o) {
     case R(String myComponent) when "component".equalsIgnoreCase(myComponent) -> {}
 }
 

parses as:

 |--RECORD_DEF -> RECORD_DEF
 |   |--MODIFIERS -> MODIFIERS
 |   |--LITERAL_RECORD -> record
 |   |--IDENT -> R
 |   |--LPAREN -> (
 |   |--RECORD_COMPONENTS -> RECORD_COMPONENTS
 |   |   `--RECORD_COMPONENT_DEF -> RECORD_COMPONENT_DEF
 |   |       |--ANNOTATIONS -> ANNOTATIONS
 |   |       |--TYPE -> TYPE
 |   |       |   `--IDENT -> Object
 |   |       `--IDENT -> o
 |   |--RPAREN -> )
 |   `--OBJBLOCK -> OBJBLOCK
 |       |--LCURLY -> {
 |       `--RCURLY -> }
 |--LITERAL_IF -> if
 |   |--LPAREN -> (
 |   |--EXPR -> EXPR
 |   |   `--LITERAL_INSTANCEOF -> instanceof
 |   |       |--IDENT -> o
 |   |       `--RECORD_PATTERN_DEF -> RECORD_PATTERN_DEF
 |   |           |--MODIFIERS -> MODIFIERS
 |   |           |--TYPE -> TYPE
 |   |           |   `--IDENT -> R
 |   |           |--LPAREN -> (
 |   |           |--RECORD_PATTERN_COMPONENTS -> RECORD_PATTERN_COMPONENTS
 |   |           |   `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |   |           |       |--MODIFIERS -> MODIFIERS
 |   |           |       |--TYPE -> TYPE
 |   |           |       |   `--IDENT -> String
 |   |           |       `--IDENT -> myComponent
 |   |           `--RPAREN -> )
 |   |--RPAREN -> )
 |   `--SLIST -> {
 |       `--RCURLY -> }
 |--LITERAL_SWITCH -> switch
 |   |--LPAREN -> (
 |   |--EXPR -> EXPR
 |   |   `--IDENT -> o
 |   |--RPAREN -> )
 |   |--LCURLY -> {
 |   |--SWITCH_RULE -> SWITCH_RULE
 |   |   |--LITERAL_CASE -> case
 |   |   |   `--PATTERN_DEF -> PATTERN_DEF
 |   |   |       `--LITERAL_WHEN -> when
 |   |   |           |--RECORD_PATTERN_DEF -> RECORD_PATTERN_DEF
 |   |   |           |   |--MODIFIERS -> MODIFIERS
 |   |   |           |   |--TYPE -> TYPE
 |   |   |           |   |   `--IDENT -> R
 |   |   |           |   |--LPAREN -> (
 |   |   |           |   |--RECORD_PATTERN_COMPONENTS -> RECORD_PATTERN_COMPONENTS
 |   |   |           |   |   `--PATTERN_VARIABLE_DEF -> PATTERN_VARIABLE_DEF
 |   |   |           |   |       |--MODIFIERS -> MODIFIERS
 |   |   |           |   |       |--TYPE -> TYPE
 |   |   |           |   |       |   `--IDENT -> String
 |   |   |           |   |       `--IDENT -> myComponent
 |   |   |           |   `--RPAREN -> )
 |   |   |           `--METHOD_CALL -> (
 |   |   |               |--DOT -> .
 |   |   |               |   |--STRING_LITERAL -> "component"
 |   |   |               |   `--IDENT -> equalsIgnoreCase
 |   |   |               |--ELIST -> ELIST
 |   |   |               |   `--EXPR -> EXPR
 |   |   |               |       `--IDENT -> myComponent
 |   |   |               `--RPAREN -> )
 |   |   |--LAMBDA -> ->
 |   |   `--SLIST -> {
 |   |       `--RCURLY -> }
 |   `--RCURLY -> }
 `--RCURLY -> }
 

Since:

10.12.0

See Also:

• JEP 405: Record Patterns
• LITERAL_WHEN
• PATTERN_VARIABLE_DEF
• LITERAL_INSTANCEOF
• SWITCH_RULE
• Constant Field Values

UNNAMED_PATTERN_DEF

public static final int UNNAMED_PATTERN_DEF

An unnamed pattern variable definition. Appears as part of a pattern definition.

For example:

    if (r instanceof R(_)) {}
 

parses as:

 LITERAL_IF -> if
  |--LPAREN -> (
  |--EXPR -> EXPR
  |   `--LITERAL_INSTANCEOF -> instanceof
  |       |--IDENT -> r
  |       `--RECORD_PATTERN_DEF -> RECORD_PATTERN_DEF
  |           |--MODIFIERS -> MODIFIERS
  |           |--TYPE -> TYPE
  |           |   `--IDENT -> R
  |           |--LPAREN -> (
  |           |--RECORD_PATTERN_COMPONENTS -> RECORD_PATTERN_COMPONENTS
  |           |   `--UNNAMED_PATTERN_DEF -> _
  |           `--RPAREN -> )
  |--RPAREN -> )
  `--SLIST -> {
      `--RCURLY -> }
 

Since:

10.14.0

See Also:

• RECORD_PATTERN_COMPONENTS
• RECORD_PATTERN_DEF
• LITERAL_SWITCH
• LITERAL_INSTANCEOF
• SWITCH_RULE
• LITERAL_WHEN
• PATTERN_VARIABLE_DEF
• PATTERN_DEF
• Constant Field Values

Constructor Details

TokenTypes

private TokenTypes()

Prevent instantiation.