OpenJDK-trim

The purpose of this tool is to re-package an existing OpenJDK build to remove classes that are not used by your application.

This can bring a typical JRE size from 100 MB down to 10 MB.

Usage

1. Configure the files you want to keep in classes.filter and files.filter

   • files.filter will be applied to the whole JDK directory
   • classes.filter will be applied to the JRE jars

2. Call jdk-trim with a path to an OpenJDK build and an output path.

Author

Gregory Schlomoff greg@aerofs.com