模拟时钟整点报时的程序设计

发布网友发布时间：2022-04-21 23:58

共3个回答

热心网友时间：2023-07-04 03:13

import java.awt.*;
import java.util.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.Timer;

public class Test extends JFrame implements ActionListener{
Timer t=new Timer(1000,this);
GregorianCalendar calendar=new GregorianCalendar();
JLabel label1=new JLabel(new Date().toString()),
label2=new JLabel("

");

public Test(){
super("TIME");
Container c=this.getContentPane();
c.setLayout(new FlowLayout());
c.add(label1);c.add(label2);
t.start();
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setBounds(200,200,200,100);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e){
Date date=new Date();
calendar.setTime(date);
if(e.getSource()==t){
label1.setText(date.toString());
if(calendar.get(Calendar.MINUTE)==0)//当分钟为0报时
if(calendar.get(Calendar.SECOND)<=5){//持续5秒报时

if(calendar.get(Calendar.SECOND)%2==0)

label2.setText("现在是北京时间"+calendar.get(Calendar.HOUR_OF_DAY)+"点整。");

if(calendar.get(Calendar.SECOND)%2==1)

label2.setText("
");
}
}
}

public static void main (String[] args) {
new Test();
}
}

热心网友时间：2023-07-04 03:14

没有的如果有我早就用了

热心网友时间：2023-07-04 03:14

莫名其妙