title: Save java.awt.Image to disk
body: <p>I have a 3rd-party lib that produces java.awt.Image object from a video stream. (In fact, it's originally used to decode .h264 file and then, display images decoded in a JFrame). </p>
  
  <p>Now, I want use that lib to capture several images of the stream and save them to hard disk.
  So, What must I do to save these java.awt.Image to file ? </p>