How to list a 2 million files directory in java without having an “out of memory” exception

Question

I have to deal with a directory of about 2 million xml\'s to be processed.

I\'ve already solved the processing distributing the work between machines and threads us

Answer 1

You can do that with Apache FileUtils library. No memory problem. I did check with visualvm.

  Iterator it = FileUtils.iterateFiles(folder, null, true);
  while (it.hasNext())
  {
     File fileEntry = (File) it.next();
  }

Hope that helps. bye