canvas.java~37~

J2ME的一个简单例子

package j2me;

import javax.microedition.lcdui.*;
import java.io.*;


public class canvas extends Canvas  implements Runnable{
  Thread thread;
  int X=0;

  public canvas() {
    thread=new Thread(this);
    thread.start();
  }
  protected void paint(Graphics g ){
    g.setColor(0,0,0);
    g.fillRect(0,0,getWidth(),getHeight());
    g.setColor(255,0,0);
    g.drawString("I LOVE YOU!",X,getHeight  ()/2,Graphics.HCENTER|Graphics.TOP);
  }

  public void run() {
    while(true){
      repaint();
      X+=1;
      if(X>getWidth())X=0;
      try {
        thread.sleep(50);
      }
      catch (InterruptedException ex) {
      }
    }
  }

}