sleep.java

班级管理查询系统

package huazheng;

import java.util.Calendar;
import java.awt.*;
public class Sleep extends Thread{
       Label j=new Label("",Label.LEFT);
	   public Sleep(){
		   start();
	   }
	   public void run(){
		   while(true){
			String s;
			//Date date=new Date();
	        Calendar rightNow = Calendar.getInstance();
	        int h,m,se;
	        h=rightNow.get(Calendar.HOUR_OF_DAY) ;
	        m=rightNow.get(Calendar.MINUTE) ;
	        se=rightNow.get(Calendar.SECOND) ;
	      //  s="现在时间:"+h+":"+m+":"+se;
	        if(m<10)
	        	if(se<10)
	        		s="现在时间："+h+":0"+m+":0"+se;
	        	else 
	        		s="现在时间: "+h+":0"+m+":"+se;
	        else if(se<10)
	        	    s="现在时间："+h+":"+m+":0"+se;
	             else
	            	 s="现在时间："+h+":"+m+":"+se;
	        j.setFont(new java.awt.Font("楷体", java.awt.Font.BOLD, 20));
			j.setForeground(new java.awt.Color(0,0,0));
	        j.setText(s);
	        j.setBackground(Color.CYAN);
	        
		   try{
			   sleep(1000);
		   }catch(Exception e){
			   
		   }
		  
	   }
	   }
		public static void main(String[] args) {

		}

	}