import java.awt.Frame;
import java.awt.Label;
import java.awt.Panel;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.text.DateFormat;
import java.util.Date;

public class Test5 {
 public static void main(String arg[]) {
  Frame f=new Frame("时钟");
  Panel p=new Panel();
  Label l=new Label("显示时钟");
  myThread mt=new myThread(l);
  l.setText(mt.showi());
  p.add(l);
  f.add(p);
  f.addWindowListener(new WindowAdapter(){

   @Override
   public void windowClosing(WindowEvent arg0) {
    System.exit(0);
   }
   
  });
  f.setLocation(200, 30);
  f.setSize(200, 80);
  f.setVisible(true);
  mt.start();
 }
}
class myThread extends Thread {
 private Label label;
 public myThread(Label lab){
  this.label=lab;
 }
     public  String showi(){
      Date date = new Date();
   int year = date.getYear() + 1900;
   int yue = date.getMonth() + 1;
   int re = date.getDate();
   int hh = date.getHours();
   int dd = date.getMinutes();
   int ss = date.getSeconds();
   return year + "年" + yue + "月" + re + "日\t" + hh + ":"
     + dd + ":" + ss;// 得到日期
  }
    
 public void run() {
  while (true) {
   label.setText(showi());
   try {
    Thread.sleep(1000);
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
 }

}