tt.java

利用Date类创建表和闹钟

import java.util.Date;
import java.util.*;
class biao
{
	int hour=0,min=0,secend=0;
	biao(Calendar calendar)
	{
        hour=calendar.get(Calendar.HOUR_OF_DAY);
        min=calendar.get(Calendar.MINUTE);
        secend=calendar.get(Calendar.SECOND);
	}
	void gettime()
	{ 
	  System.out.println("系统时间："+ hour+"时"+min+"分"+secend+"秒");
	}
}
class clock extends biao
{
	clock(Calendar calendar)
	{
	  super(calendar);
	}
	void call(Calendar calendar)
	{
	if(min==00&&secend==00)
	for(int i=1;i<6;i++)
 	System.out.println("懒虫起床啦!");
	}
}
public class tt
{
	public static void main(String args[])throws InterruptedException
	{ 
	  while(true)
	  { Calendar calendar=Calendar.getInstance();
	  calendar.setTime(new Date());
	  biao s1=new biao(calendar);
          s1.gettime();
	  clock c1=new clock(calendar);
  	  c1.call(calendar);
          Thread.sleep(1000);
	  }	  
}	
}