例8-12.java

医院无线局域网设计方案 医院无线局域网设计方案

import java.awt.*;
import java.applet.Applet;
public class tt extends Applet implements Runnable
{	
  Thread runThread;
  String s="Welcome to here!";
  int s_length=s.length(),x_character=0;
  Font wordFont=new Font("TimesRoman",Font.BOLD,50);
  public void start()
  {
    if(runThread==null)
    {
      runThread=new Thread(this);
      runThread.start();
    } 
  }
  public void stop()
  {
    if(runThread!=null)
    {
      runThread.stop();
      runThread=null;
    }
  }
  public void run()
  {
    while(true)
    {
      if(++x_character>s_length)
        x_character=0;
      repaint();
      try{Thread.sleep(100);}catch(InterruptedException e){}
    }
  }
  public void paint(Graphics g)
  {
    g.setFont(wordFont);
    g.setColor(Color.red);
    g.drawString(s.substring(0,x_character),8,50);
  }
}