Annotation File Utilities is an open-source Java tool for annotations.

Programmers need to be able to transfer annotations between the three possible locations for annotations - source code, class files, and annotation files. Programmers will want to extract annotations from source and class files to an annotation file in order to easily read annotations, while various tools will only read annotations from source and class files.

The Annotation File Utilities provide three tools to read and write annotation files:

• Insert-annotations reads annotations from an annotation file and inserts them into an existing class file
• Extract-annotations reads annotations from a class file and writes them out to a new annotation file
• Insert-annotations-to-source reads annotations from an annotation file and inserts them into an existing Java source file

More detailed information can be found on Annotation File Utilities homepage.