import javax.swing.JFrame; /** * When this class is run as a stand-alone application, it opens a window * that contains a RandomArtPanel as its content pane. The panel shows * a new random drawing every four seconds. */ public class RandomArt { public static void main(String[] args) { JFrame window = new JFrame("Random Art ??"); RandomArtPanel content = new RandomArtPanel(); window.setContentPane(content); window.setSize(400,400); window.setLocation(100,100); window.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE ); window.setVisible(true); } }