Package com.puppycrawl.tools.checkstyle.checks.coding

Contains the Coding checks that are bundled with the main distribution.

Class Summary

Class	Description
AbstractSuperCheck	Abstract class for checking that an overriding method with no parameters invokes the super method.
AbstractSuperCheck.MethodNode	Stack node for a method definition and a record of whether the method has a call to the super method.
ArrayTrailingCommaCheck	Checks that array initialization contains a trailing comma.
AvoidDoubleBraceInitializationCheck	Detects double brace initialization.
AvoidInlineConditionalsCheck	Detects inline conditionals.
AvoidNoArgumentSuperConstructorCallCheck	Checks if call to superclass constructor without arguments is present.
ConstructorsDeclarationGroupingCheck	Checks that all constructors are grouped together.
CovariantEqualsCheck	Checks that classes and records which define a covariant equals() method also override method equals(Object).
DeclarationOrderCheck	Checks that the parts of a class, record, or interface declaration appear in the order suggested by the Code Conventions for the Java Programming Language.
DeclarationOrderCheck.ScopeState	Private class to encapsulate the state.
DefaultComesLastCheck	Check that the default is after all the cases in a switch statement.
EmptyStatementCheck	Detects empty statements (standalone ";" semicolon).
EqualsAvoidNullCheck	Checks that any combination of String literals is on the left side of an equals() comparison.
EqualsAvoidNullCheck.FieldFrame	Holds the names of fields of a type.
EqualsHashCodeCheck	Checks that classes that either override equals() or hashCode() also overrides the other.
ExplicitInitializationCheck	Checks if any class or object member is explicitly initialized to default for its type value (null for object references, zero for numeric types and char and false for boolean.
FallThroughCheck	Checks for fall-through in switch statements.
FinalLocalVariableCheck	Checks that local variables that never have their values changed are declared final.
FinalLocalVariableCheck.FinalVariableCandidate	Represents information about final local variable candidate.
FinalLocalVariableCheck.ScopeData	Holder for the scope data.
HiddenFieldCheck	Checks that a local variable or a parameter does not shadow a field that is defined in the same class.
HiddenFieldCheck.FieldFrame	Holds the names of static and instance fields of a type.
IllegalCatchCheck	Checks that certain exception types do not appear in a catch statement.
IllegalInstantiationCheck	Checks for illegal instantiations where a factory method is preferred.
IllegalThrowsCheck	Checks that specified types are not declared to be thrown.
IllegalTokenCheck	Checks for illegal tokens.
IllegalTokenTextCheck	Checks specified tokens text for matching an illegal pattern.
IllegalTypeCheck	Checks that particular classes or interfaces are never used.
InnerAssignmentCheck	Checks for assignments in subexpressions, such as in String s = Integer.toString(i = 2);.
MagicNumberCheck	Checks that there are no "magic numbers" where a magic number is a numeric literal that is not defined as a constant.
MatchXpathCheck	Evaluates Xpath query and report violation on all matching AST nodes.
MissingCtorCheck	Checks that classes (except abstract ones) define a constructor and don't rely on the default one.
MissingNullCaseInSwitchCheck	Checks that a given switch statement or expression that use a reference type in its selector expression has a null case label.
MissingSwitchDefaultCheck	Checks that switch statement has a default clause.
ModifiedControlVariableCheck	Checks that for loop control variables are not modified inside the for block.
MultipleStringLiteralsCheck	Checks for multiple occurrences of the same string literal within a single file.
MultipleVariableDeclarationsCheck	Checks that each variable declaration is in its own statement and on its own line.
NestedForDepthCheck	Restricts nested for blocks to a specified depth.
NestedIfDepthCheck	Restricts nested if-else blocks to a specified depth.
NestedTryDepthCheck	Restricts nested try-catch-finally blocks to a specified depth.
NoArrayTrailingCommaCheck	Checks that array initialization do not contain a trailing comma.
NoCloneCheck	Checks that the clone method is not overridden from the Object class.
NoEnumTrailingCommaCheck	Checks that enum definition does not contain a trailing comma.
NoFinalizerCheck	Checks that there is no method finalize with zero parameters.
OneStatementPerLineCheck	Checks that there is only one statement per line.
OverloadMethodsDeclarationOrderCheck	Checks that overloaded methods are grouped together.
PackageDeclarationCheck	Ensures that a class has a package declaration, and (optionally) whether the package name matches the directory name for the source file.
ParameterAssignmentCheck	Disallows assignment of parameters.
RequireThisCheck	Checks that references to instance variables and methods of the present object are explicitly of the form "this.varName" or "this.methodName(args)" and that those references don't rely on the default behavior when "this." is absent.
RequireThisCheck.AbstractFrame	A declaration frame.
RequireThisCheck.AnonymousClassFrame	An anonymous class frame; holds instance variable names.
RequireThisCheck.BlockFrame	A frame initiated on entering a statement list; holds local variable names.
RequireThisCheck.CatchFrame	A frame initiated on entering a catch block; holds local catch variable names.
RequireThisCheck.ClassFrame	A frame initiated at class, enum or interface definition; holds instance variable names.
RequireThisCheck.ConstructorFrame	A frame initiated at constructor definition.
RequireThisCheck.ForFrame	A frame initiated on entering a for block; holds local for variable names.
RequireThisCheck.MethodFrame	A frame initiated at method definition; holds a method definition token.
RequireThisCheck.TryWithResourcesFrame	A frame initiated on entering a try-with-resources construct; holds local resources for the try block.
ReturnCountCheck	Restricts the number of return statements in methods, constructors and lambda expressions.
SimplifyBooleanExpressionCheck	Checks for over-complicated boolean expressions.
SimplifyBooleanReturnCheck	Checks for over-complicated boolean return or yield statements.
StringLiteralEqualityCheck	Checks that string literals are not used with == or !=.
SuperCloneCheck	Checks that an overriding clone() method invokes super.clone().
SuperFinalizeCheck	Checks that an overriding finalize() method invokes super.finalize().
UnnecessaryParenthesesCheck	Checks if unnecessary parentheses are used in a statement or expression.
UnnecessarySemicolonAfterOuterTypeDeclarationCheck	Checks if unnecessary semicolon is used after type declaration.
UnnecessarySemicolonAfterTypeMemberDeclarationCheck	Checks if unnecessary semicolon is used after type member declaration.
UnnecessarySemicolonInEnumerationCheck	Checks if unnecessary semicolon is in enum definitions.
UnnecessarySemicolonInTryWithResourcesCheck	Checks if unnecessary semicolon is used in last resource declaration.
UnusedCatchParameterShouldBeUnnamedCheck	Ensures that catch parameters that are not used are declared as an unnamed variable.
UnusedCatchParameterShouldBeUnnamedCheck.CatchParameterDetails	Maintains information about the catch parameter.
UnusedLambdaParameterShouldBeUnnamedCheck	Ensures that lambda parameters that are not used are declared as an unnamed variable.
UnusedLambdaParameterShouldBeUnnamedCheck.LambdaParameterDetails	Maintains information about the lambda parameter.
UnusedLocalVariableCheck	Checks that a local variable is declared and/or assigned, but not used.
UnusedLocalVariableCheck.TypeDeclDesc	Maintains information about the type declaration.
UnusedLocalVariableCheck.VariableDesc	Maintains information about the variable.
VariableDeclarationUsageDistanceCheck	Checks the distance between declaration of variable and its first usage.
WhenShouldBeUsedCheck	Ensures that when is used instead of a single if statement inside a case block.

Enum Summary

Enum	Description
RequireThisCheck.FrameType	An AbstractFrame type.