How to Install Jad (Java decompiler) in Eclipse

1. Download jadclipse from https://sourceforge.net/projects/jadclipse/.
2. Put the JadClipse JAR file into the plugins folder of your Eclipse installation.
3. Restart Eclipse (eclipse -clean).
4. Download Jad from http://varaneckas.com/jad/ and make it executable.
5. Configure the path to the Jad executable in Eclipse: Window --> Preferences --> Java --> JadClipse --> Path to Decompiler.
6. In Eclipse go to Window --> Preferences --> General --> Editors --> File Associations and make sure that the JadClipse Class File Viewer has the default file association for *.class files.

Enjoy!