是否有用于运行测试组的JUnit TestRunner？

I am currently using JUnit 4 and have a need to divide my tests into groups that can be run selectively in any combination. I know TestNG has a feature to annotate tests to assign them to groups, but I can't migrate to TestNG right now. It seems this could easily be accomplished in JUnit with some custom annotations and a custom JUnit TestRunner. I've checked both the JUnit docs and searched the web but couldn't find such a thing. Is anyone aware of such a TestRunner?I am currently using JUnit 4 and have a need to