Java Tutorial/Swing/DebugGraphics

14. DebugGraphics

DebugGraphics SettingsDescriptionDebugGraphics.BUFFERED_OPTIONCauses a window to pop up, displaying the drawing of the double-buffered imageDebugGraphics.FLASH_OPTIONCauses the drawing to be done more slowly, flashing between stepsDebugGraphics.LOG_OPTIONCauses a message to be printed to the screen as each step is doneDebugGraphics.NONE_OPTIONDisables all options

   <source lang="java">

import javax.swing.DebugGraphics; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.RepaintManager; public class DebugGraphicsDemo {

 public static void main(String[] a) {
   JFrame frame = new JFrame();
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   JButton bn = new JButton();
   RepaintManager repaintManager = RepaintManager.currentManager(bn);
   repaintManager.setDoubleBufferingEnabled(false);
   bn.setDebugGraphicsOptions(DebugGraphics.BUFFERED_OPTION | DebugGraphics.FLASH_OPTION
       | DebugGraphics.LOG_OPTION);
   frame.add(bn);
   frame.setSize(300, 300);
   frame.setVisible(true);
   frame.add(bn);
 }

}</source>