title: JPanel with image background
body: <p>How to put image background on JPANEL?</p>
  
  <pre><code>JPanel pDraw = new JPanel(new GridLayout(ROWS,COLS,2,2)); 
  pDraw.setPreferredSize(new Dimension(600,600)); //size of the JPanel
  pDraw.setBackground(Color.RED); //How can I change the background from red color to image?
  </code></pre>