title: Opening a file selection window from a java application
body: <p>How do I make my java application open one of those fancy file selection windows?
  If you know, please tell me how to for both Mac and PC; It would help me a lot.
  I searched google and StackOverflow, as well as some other sites, but just couldn't fnd what I was looking for. Btw, I'm still quite a noob at Java, so I wouldn't mind if you explain what your code does for me :P</p>