th.txt

java简单的线程程序。实现一个滚动的字符串

import java.awt.*;
import java.awt.Event.*;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class thrd1 
{
  public static void main(String args[])
  {
	  thrdla frm=new thrdla();
  }
}

class thrdla extends Frame implements Runnable
{
int x=5;
Thread trd=null;
thrdla()
{
  setBounds(100,100,300,180);
  setVisible(true);
  setBackground(Color.yellow);
  setForeground(Color.blue);
  setFont(new Font("Bookman Old Style",Font.BOLD,20));
  trd=new Thread(this);
  trd.start();
  addWindowListener(
		  new WindowAdapter(){
			  public void windowClosing(WindowEvent e){
				 System.exit(0);}});
}
	public void run() 
	{
	  while(true)
	  {
		  x=x+2;
		  if(x>200)
			   x=5;
		  repaint();
		  try
		  {
			  trd.sleep(100);
		  }
		  catch(InterruptedException e)
		  {
	      } 
	  }
	}
	public void paint(Graphics g)
	{
		g.drawString("Wlecome Everybody!", x,80);
	}
	
}