Type Annotations

The goals of the Type Annotations Project were:

1. Develop the Reference Implementation of JSR 308, Annotations on Java Types. Development was covered by JEP 104.

2. Integrate the Reference Implementation into JDK 8, the Reference Implementation of JSR 337, Java SE 8 Release Contents.

As of March 2014, development is finished and integration into JDK 8 is complete. The Project's mailing list (type-annotations-dev) and Mercurial forest (type-annotations) have been archived. The JSR 308 Expert Group mailing list (type-annotations-spec-experts) has also been archived.

Please report bugs in the implementation to bugreport.java.com or (if you are an OpenJDK Committer) via bugs.openjdk.org.

• Bugs in how javac handles type annotations are tracked in tools/javac.

• Bugs in how Core Reflection exposes type annotations are tracked in core-libs/java.lang:reflect.

• Bugs in how Annotation Processing exposes type annotations are tracked in core-libs/javax.lang.model.

The Project was sponsored by the Compiler Group.

Resources

• The Java Tutorial: Type Annotations and Pluggable Type Systems

• JavaOne 2013 presentation: Enhanced Metadata in Java SE 8

• Type Annotations (JSR 308) and the Checker Framework at the University of Washington.

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