title: How to use regular expressions with Eclipse's find/replace to refactor code
body: <p>I'm still developing my regex skills, so I'm leaning on the community.  I say I want to refactor code "with Eclipse", but I've used a number of IDE's whose search and replace functions accept regular expressions.  I've successfully create general expressions to find things, but wonder if I can take portions of the matched pattern and use in the replacement value.  For example, I have a lot of test functions named with the following pattern" "testSomeFunction1(), testSomeFunction2(), testAnotherFunction()"  I'd really like them to be named "test_someFunction1(), test_someFunction2(), test_anotherFunction()".  The Find: is "test[A-Z]", but what do I use for Replace with:?  "test_[a-z]" is literally replacing?  Perhaps, I cannot use a regex statement in the replacement?</p>