I'd like to change and have some play with content assistant in jface and then I'd like to try it in Eclipse.
I've checked out org.eclipse.jface and changed ContentProposalAdapter.java at TargetControlListener method (I inserted a "return" to let me see if I am on the right place), and then I exported it as an Eclipse plugin to the Eclipse plugin directory (with the same name as the original jar file was), then I started Eclipse, but nothing has changed. Content assistant works.
If I delete this jar file, then Eclipse does not starts, so this file is loaded at startup.
Could you tell me please how and where I have to have modifications to take effect in Eclipse?