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  Tutorial: Annotations in Tiger, Part 2: Custom annotations

Write your own annotations in Java 5 Part 1 of this series introduced annotations, the new metadata facility in J2SE 5.0, and focused on Tiger's basic built-in annotations. A more powerful related feature is support for writing your own annotations. In t

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Defining your own annotation type
With the addition of a little syntax (and Tiger has added plenty of syntactical constructs), the Java language supports a new type -- the annotation type. An annotation type looks a lot like an ordinary class, but it has some unique properties. Most notably, you can use it with the at sign (@) in your classes to annotate your other Java code. I'll walk you through the process piece by piece.

The @interface declaration
Defining a new annotation type is a lot like creating an interface, except that you precede the interface keyword with the @ sign.


 

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Annotations in Tiger, Part 2: Custom annotations

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Annotations in Tiger, Part 2: Custom annotations

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