国庆倒计时

package com.hp.demo02;
import javax.swing.*;
import java.util.Calendar;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

/*
*国庆倒计时
* */
public class Demo01 {
    long longTime;
    long currentTime;
    long distTime;
    long day, hour, minutes, seconds;

    public  Demo01(){
        CDown();
    }
    public void CDown() {
        Timer t = new Timer();
        final JLabel jl = new JLabel();
        final JFrame jf = new JFrame();
        jf.add(jl);
        jf.setVisible(true);
        jf.setSize(400, 150);
        jf.getDefaultCloseOperation();
        t.schedule(new TimerTask() {
            @Override
            public void run() {
                Calendar cal = Calendar.getInstance();
                cal.set(2022, 10, 1, 0, 0, 0);
                longTime = cal.getTimeInMillis();
                currentTime = new Date().getTime();
                distTime = longTime - currentTime;
                System.out.println("毫秒差为：" + distTime);
                day = ((distTime / 1000) / (3600 * 24));
                hour = ((distTime / 1000) - day * 86400) / 3600;
                minutes = ((distTime / 1000) - day * 86400 - hour * 3600) / 60;
                seconds = (distTime / 1000) - day * 86400 - hour * 3600
                        - minutes * 60;
                System.out.println((" 国庆倒计时" + day + " 天 " + hour + "小时 :" + minutes
                        + "分钟 :" + seconds + "秒"));
            }
        }, 0, 1000);
    }
    public static void main(String[] args) {
        new Demo01();
    }
}