title: Java Grep Library
body: <p>Is there any good, simple Java Grep Library? I'm not opposed to native code, or scripting, and I'll do it, but for my purposes, throughput is not a huge deal, and it would be nice to have it all in one tidy package.</p>
  
  <p>UPDATE: Sorry. I know about java.regex, I just happen to be fairly busy and tired right now. What I'm looking for is something that efficiently combines java regex with going through a set of files and rewriting them. This wouldn't be too hard to write, I admit. I was just curious if that exists already.</p>