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

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);
  }
}