movingstring.java

来自「java课件 java课件 java课件 java课件」· Java 代码 · 共 39 行

//<applet code="MovingString.class" height="100" width="950">
//</applet>
import java.awt.*;
import javax.swing.*;
class MovePanel extends JPanel implements Runnable{
   String s="You are welcome to the animation world."+
"                     ";
   Font f=new Font("Dialog",Font.BOLD,36);
   Color c=Color.CYAN;
   public void paintComponent(Graphics g){
   	  super.paintComponent(g);
   	  c=new Color((int)(Math.random()*256),
   	              (int)(Math.random()*256),
   	              (int)(Math.random()*256));  	              
   	  g.setColor(c);
   	  g.setFont(f);
   	  g.drawString(s,10,50);
   }	
   public void run(){
   	  while(true){
   	  	char c=s.charAt(0);
   	  	s=s.substring(1)+c;
   	  	repaint();
   	  	try{
   	  		Thread.sleep(500);
   	  	}catch(InterruptedException e){}
   	  }
   }
}

public class MovingString extends JApplet{
    MovePanel mp=new MovePanel();
    Thread t=new Thread(mp);
    public void init(){
       getContentPane().add(mp,BorderLayout.CENTER);
       t.start();  	
    }	
}