151 ColorSwirl --Teach Yourself Java in 21 Days中的一个例子- paint 和 update
public void stop () {
if (runThread != null) {
runThread.stop();
runThread = null;
}
}
public void paint(Graphic g) {
g.setFont(f);
g.drawString ("All the Swirly Colors", 15,50);
}
public void update(Graphics g) {
paint(g); } // No need to clear background as unchanged! -- only color of letters changes
} // end Applet ColorSwirl
See the imagefile
Copyright: NPACT
