As the title states, I\'m trying to use javap with eclipse but have difficulties setting it up. I\'m trying to set it up using external tools from
Your problem is that javap requres path to class file but when you select your source file you can access eclipse variable ${selected_resource_loc} contains path to java source. As far as I understand there is no variable that contains path to class file.
I think that the easiest way for you is creating your custom script that accepts path to java file, replaces java to class and source folder to bin folder. If you are using linux it it can be easily done using command sed. If you are on windows it can be implemented using command SET with ~. See help for more details.
Good luck.