title: SWING JPanel / JXPanel Animation
body: <p>In SWING is there a good/easy way of animating a the show and hide of a JPanel?  I would like animate the expand of a JPanel height.  I figured I could use a timer and increment the height, but was hoping there was something already out there.</p>
  
  <p>Here is an example: (I know this is a web app.... sry). Click Login at the top.
  <a href="http://web-kreation.com/demos/Sliding_login_panel_jquery/#" rel="nofollow">http://web-kreation.com/demos/Sliding_login_panel_jquery/#</a></p>
  
  <p>Thanks</p>