JAVA EE: Java Tutorial: Annotations in java | Java annotations [How to declare an annotation type]

Thursday, 11 May 2017

Java Tutorial: Annotations in java | Java annotations [How to declare an annotation type]

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Java Tutorial: Annotations in java | Java annotations [How to declare an annotation type]

ClassPreamble.java

import java.lang.annotation.Documented;

@Documented
@interface ClassPreamble 
{
   String author();
   String date();
   int currentRevision() default 1;
   String lastModified() default "N/A";
   String lastModifiedBy() default "N/A";
   // Note use of array
   String[] reviewers();
}

MyClass.java

@ClassPreamble 
(
   author = "Ram",
   date = "3/17/2017",
   currentRevision = 2,
   lastModified = "4/12/2017",
   lastModifiedBy = "Peter",
   // Note array notation
   reviewers = {"Alice", "Bob", "Cindy"}
)

public class MyClass
{
    // class code goes here
}