java Annotation Meta-annotations

Meta-annotations

@Target

  1. CONSTRUCTOR: Constructor declaration
  2. FIELD: Field declaration (includes enum constants) 
  3. LOCAL_VARIABLE: Local variable declaration METHOD: Method declaration
  4. PACKAGE: Package declaration
  5. PARAMETER: Parameter declaration
  6. TYPE: Class, interface (including annotation type),or enum declaration


@Retention

  1. SOURCE: Annotations are discarded by thecompiler.
  2. CLASS: Annotations are available in the class file by the compiler but can be discarded by the VM. 
  3. RUNTIME: Annotations are retained by the VM at run time, so they may be read reflectively.

@Documented

  1. Include this annotation in the Javadocs.

@Inherited

  1. Allow subclasses to inherit parent annotations.

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