java文字时钟运行问题

Question

package texttime;
import java.applet.*;
import java.util.*;
import java.awt.*;

/**
*

• @author Administrator
  */
  public class TextTime extends Applet implements Runnable {
  Thread th=null;
  TextField tt=new TextField(30);
  public void init(){
  add(tt);
  }
  public void start(){
  if(th==null){
  th=new Thread(this);
  th.start();
  }
  }
  public void stop(){
  if(th!=null){
  th.stop();
  th=null;
  }
  }
  public void run(){
  while(true){
  Date dd=new Date();
  tt.setText(dd.toGMTString());
  try{
  Thread.sleep(1000);
  }catch(InterruptedException e){
  }
  }
  }

  /**

  • @param args the command line arguments */ public static void main(String[] args) { // TODO code application logic here

  }

}

Answer 1

 @param args the command line arguments */ public static void main(String[] args) { // TODO code application logic here
      TextTime tt = new TextTime();
         tt.start();
}
}