Chapter 11 ▪ Annotations
Annotations are tags that you insert into your source code so that some tool can process them. The tools can operate on the source level, or they can process class files into which the compiler has placed annotations.
Annotations do not change the way your programs are compiled. The Java compiler generates the same virtual machine instructions with or without the annotations.
To benefit from annotations, you need to select a processing tool and use annotations that your processing tool understands. You need to invoke the tool in your build or execution process.
There is a wide range of uses for annotations. For example, JUnit (available at https://junit.org) uses annotations to mark methods that execute tests and to ...
Get Core Java for the Impatient, 4th Edition now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
