Eclipse JDT API Specification

Java Development Tools APT Plug-in Packages

org.eclipse.jdt.apt.core.build	This package contains utilities for annotation processing in command-line builds and ant scripts.
org.eclipse.jdt.apt.core.env	This package contains Eclipse extensions to some of the Sun annotation processing APIs.
org.eclipse.jdt.apt.core.util	This package contains miscellaneous APIs related to Java annotation processing.