Run-Time Processing of Annotations

Run-Time Processing of Annotations
in Java

Prof. David Bernstein
James Madison University

Computer Science Department

bernstdh@jmu.edu

Review

Run-Time Processing

The Process:
- Use reflection
The Details:
- Get the target of the annotation (e.g., the Class, or Method object)
- Call the getAnnotation() method

An Example

The Setting:
- We want to use JUnit to test a heuristic; some of the tests are critical (i.e., normal tests), some of are methods that may or may not produce the correct answer even when "working"
What's Needed:
- An annotation
- A TestExecutionListener

An Example (cont.)

The Annotation

javaexamples/annotations/NonCritical.java