Class PackageAnnotationCheck

All Implemented Interfaces:
Configurable, Contextualizable

public class PackageAnnotationCheck extends AbstractCheck

Checks that all package annotations are in the package-info.java file.

For Java SE8 and above, placement of package annotations in the package-info.java file is enforced by the compiler and this check is not necessary.

For Java SE7 and below, the Java Language Specification highly recommends but doesn't require that annotations are placed in the package-info.java file, and this check can help to enforce that placement.

See Java Language Specification, §7.4.1 for more info.

To configure the check:

 <module name="PackageAnnotation"/>
 

Example of validating MyClass.java:

 @Deprecated
 package com.example.annotations.packageannotation; //violation
 

Example of fixing violation in MyClass.java:

 package com.example.annotations.packageannotation; //ok
 

Example of validating package-info.java:

 @Deprecated
 package com.example.annotations.packageannotation; //ok
 

Parent is com.puppycrawl.tools.checkstyle.TreeWalker

Violation Message Keys:

  • annotation.package.location
Since:
5.0
  • Field Details

    • MSG_KEY

      public static final String MSG_KEY
      A key is pointing to the warning message text in "messages.properties" file.
      See Also:
  • Constructor Details

    • PackageAnnotationCheck

      public PackageAnnotationCheck()
  • Method Details

    • getDefaultTokens

      public int[] getDefaultTokens()
      Description copied from class: AbstractCheck
      Returns the default token a check is interested in. Only used if the configuration for a check does not define the tokens.
      Specified by:
      getDefaultTokens in class AbstractCheck
      Returns:
      the default tokens
      See Also:
    • getRequiredTokens

      public int[] getRequiredTokens()
      Description copied from class: AbstractCheck
      The tokens that this check must be registered for.
      Specified by:
      getRequiredTokens in class AbstractCheck
      Returns:
      the token set this must be registered for.
      See Also:
    • getAcceptableTokens

      public int[] getAcceptableTokens()
      Description copied from class: AbstractCheck
      The configurable token set. Used to protect Checks against malicious users who specify an unacceptable token set in the configuration file. The default implementation returns the check's default tokens.
      Specified by:
      getAcceptableTokens in class AbstractCheck
      Returns:
      the token set this check is designed for.
      See Also:
    • visitToken

      public void visitToken(DetailAST ast)
      Description copied from class: AbstractCheck
      Called to process a token.
      Overrides:
      visitToken in class AbstractCheck
      Parameters:
      ast - the token to process