Patch from Fredrik Westermarck <fredrik.westermarck@mdh.se> that adds the
containsOnly method. I added a couple more unit tests and modified the code
slightly.


git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/lang/trunk@137047 13f79535-47bb-0310-9956-ffa450edef68
2 files changed