canvas.java~43~

J2ME的一个简单例子

package j2me;

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


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

  public canvas() {
  }
  protected void paint(Graphics g ){
    g.setColor(0,0,0);
    g.fillRect(0,0,getWidth(),getHeight());
    g.setColor(255,0,0);
    g.drawString("*",X,Y,Graphics.HCENTER|Graphics.TOP);
  }

   protected void keyPressed(int keyCode) {
     switch(keyCode){
       case KEY_NUM0:{
             Y += 1; break; }
      case this.KEY_POUND:{
          X+=1;break;
      }
      default: break;
         }
     repaint();
   }
}