This is one of the most useful little extensions I have ever come across. It's a plugin that adds several new tools to the context menus in many different Eclipse text-based editors. I first encountered the power and convenience of this tool on a project to clean up and refactor a crusty old code-base. Too many times in its past history, the developers had used the Copy-Paste-Tweak approach, which left lots of nearly-duplicated code that did 99% of the same thing. Using Eclipse's built-in refactoring tool to Extract Method would not always refactor them all.
Musings on Tests, Quality, Tools, Projects and more. By Steve Page