Java decompiler plugin not working

Obviously I mixed the actual JD-eclipse-plugin an a plugin called JadClipse for Eclipse which is a slightly different plugin from eclipse marketplace. Thus when I followed the installation instructions of JD-eclipse, I could set the options for the screenshot posted within the question. So I set JD-eclipse as default for both *.class-files with and those without source-code.

Second mistake I did was a pretty silly and obvious one, namely that I wanted to browse the jar-files from within WEB-INF-folder of my Tomcat instead of from within Java Resources. Thus I could not dive into the jar-files at all hindering me to get to the class-level and thus to decompile those classes contained within the jar.

I hope this helps anyone outside also having trouble with the plugin for eclipse.

For Eclipse 2018-09 , the problem was related to " class without source "

• I had resolved this issue by going to:

  1. Preferences
  2. General
  3. Editors
  4. File Associations
  5. Class without source

and setting decompliler viewer as default : see the following screen shot: