距离元旦还有多少天-----电子时钟

最新推荐文章于 2021-08-10 18:14:20 发布

恍若丶一梦

最新推荐文章于 2021-08-10 18:14:20 发布

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文章标签： java

本文链接：https://blog.youkuaiyun.com/DESTINY_SELECT/article/details/84446878

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package 实验13;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.text.SimpleDateFormat;
import java.util.Calendar;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

public class 距离元旦之电子时钟 {

   public static void main(String[] args) {
       newYearDate y = new newYearDate();
       Thread th = new Thread(y,"元旦");
       th.start();

}

}
class newYearDate implements Runnable{
   JFrame jf = new JFrame("元旦放假倒计时");
   JPanel jp = new JPanel();
   JPanel jp2 = new JPanel();
   JPanel jp3 = new JPanel();
   JLabel jl = new JLabel();
   JLabel jl2 = new JLabel();
   public newYearDate() {
       jp2.setLayout(new GridLayout(2, 1));
       jp3.add(jl2);
       jp2.add(jp3);
       jp3.setBackground(Color.BLACK);
       jp2.add(jp);
       jl2.setText("距离元旦还有:");
       jl.setFont(new Font("微软雅黑", Font.BOLD, 30));
       jl.setForeground(Color.RED);
       jl2.setFont(new Font("微软雅黑", Font.BOLD, 20));
       jl2.setForeground(Color.RED);
       jp.add(jl);
       jp.setBackground(Color.BLACK);
       jf.add(jp2);
       jf.setBounds(300, 300, 1000, 200);
       jf.setVisible(true);
       jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   }
   @Override
   public void run() {
       // TODO 自动生成的方法存根
       while(true) {
           String time = getSurplusDate_2();
           //System.out.println(time);
           jl.setText(time);
           jp2.validate();
           try {
               Thread.sleep(1000);
           } catch (InterruptedException e) {

               e.printStackTrace();
           }
       }

   }

   public static String getSurplusDate_2() {
       String str = "";
       Calendar newYear = Calendar.getInstance();
       newYear.set(2019, 0, 1, 0, 0, 0);   //注意一定要把时分秒设置上否则的话时间会一直固定
       Calendar cal = Calendar.getInstance();
       long time = newYear.getTimeInMillis() - cal.getTimeInMillis();

       time /= 1000;
       long day = 0,hour = 0,min = 0,second = 0;

       day = time / (24 * 60 * 60);
       hour = time / (60 * 60) - day * 24;
       min = time / (60) - day * 24 * 60 - hour * 60;
       second = time - day * 24 * 60 * 60 - hour * 60 * 60 - min * 60;
//       str = day + "天 " + hour + ":" + min + ":" + second;

       Calendar temp = Calendar.getInstance();
       temp.set(Calendar.HOUR, (int)hour);
       temp.set(Calendar.MINUTE, (int)min);
       temp.set(Calendar.SECOND, (int)second);
       SimpleDateFormat sdf = new SimpleDateFormat("hh:mm:ss");
       str = day + "天" + sdf.format(temp.getTime());
       return str;
   }


}