checkstyle – UnnecessarySemicolonInEnumeration

UnnecessarySemicolonInEnumeration

Since Checkstyle 8.22

Description

Checks if unnecessary semicolon is in enum definitions. Semicolon is not needed if enum body contains only enum constants.

Examples

To configure the check:

<module name="Checker">
  <module name="TreeWalker">
    <module name="UnnecessarySemicolonInEnumeration"/>
  </module>
</module>

Example of violations

enum One {
    A,B; // violation, 'Unnecessary semicolon'
}
enum Two {
    A,B,; // violation, 'Unnecessary semicolon'
}
enum Three {
    A,B(); // violation, 'Unnecessary semicolon'
}
enum Four {
    A,B{}; // violation, 'Unnecessary semicolon'
}
enum Five {
    A,
    B
    ; // violation, 'Unnecessary semicolon'
}

Example of good cases

enum Normal {
    A,
    B,
    ; // ok, enum body contains constructor
  Normal(){}
}
enum NoSemicolon {
    A, B // ok, only enum constants without semicolon
}