I'm using Intellij myself and with that, in the Project overview I see a list of dependencies projects are using. With that I can quickly see if I'm using multiple versions of a certain dependency.
This same type of dependency list is present in Netbeans, only per project. And with Netbeans you can also generate a dependency graph by right clicking on your project, and this goes through all dependent projects and their deps as well. I have no deep experience with Eclipse, since I somehow dislike Eclipse with JAVA development, but I think it's available in there somewhere as well. I use those dependencies lists as well to find and "clean up" dependencies. Cheers, Marco Springer