title: Making multiple frames in a single program
body: <p>I always wondered on how can I make a program with multiple JFrames. I mean I just want one class to handle all the GUIs and stuff but how can I effectively do this? A lot of tutorials say that we make JFrame by inheriting from JFrame. But what If I want many frames?</p>
  
  <p>Ex:
  Title of Application in one frame with some options
  Menu is one frame
  Main working application is one frame
  Like in a game.</p>
  
  <p>But I am not sure if I am pertaining to JPanel? I am completely puzzled with the 2. I just want one un-moving frame but basically the content of the frame is changing.
  When I click START for example, it will change to the gaming style of frame.</p>