JAVA Applet编程

package imagetest; import java.applet.Applet; import java.awt.HeadlessException; import java.awt.*; public class MultiThread extends Applet implements Runnable { private Image[] imgs; private int totalImages=10; private int currentImage; private int i=0; private Image imgBuf; private Graphics gBuf; private MediaTracker mt; private boolean bStop=false; public void init() { mt=new MediaTracker(this); imgBuf=createImage(600,400); gBuf=imgBuf.getGraphics(); gBuf.setColor(Color.white); gBuf.fillRect(0,0,600,400); imgs=new Image[totalImages]; for(int i=0;i<totalImages;i++) { imgs[i]=getImage(getDocumentBase(),"T"+(i+1)+".gif"); mt.addImage(imgs[i],i); } try { mt.waitForID(0); } catch (Exception ex) { ex.printStackTrace(); } } public void start() { currentImage=0; gBuf.drawImage(imgs[currentImage],0,0,this); currentImage=1; new Thread(this).start(); } public void stop() { bStop=true; } public void paint(Graphics g) { g.drawImage(imgBuf,0,0,this); } public void update(Graphics g) { paint(g); } public void run() { while(!bStop) { if(mt.checkID(currentImage,true)) { gBuf.fillRect(0, 0, 600, 400); gBuf.drawImage(imgs[currentImage], 0, 0, this); currentImage = ++currentImage % 10; } try { Thread.sleep(500); } catch (Exception ex) { //ex.printStackTrace(); } repaint(); } } }