title: Transparent JFrame background, but visible contents
body: <p>I'm trying to make a desktop widget using Java, basically what it is, a clock that looks like the Sense Clock Widget from HTC android phones. </p>
  
  <p>Everything is set, clock works and I have a background and clock hour/minute images. The only thing I need is to make the JFrame background transparent. The JFrame is undecorated and can be moved around by its content, just like any widget should act. </p>
  
  <p>I need to figure out how to make the ugly JFrame background from grey to transparent but keep the contents opaque.</p>