showtime.java~7~

管理系统

package com.aptech.cdjj.sex.gui;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.text.*;
import java.util.*;
public class ShowTime extends JFrame implements Runnable
{
    static JFrame jf;
    JLabel jl;
    public ShowTime() {
        jf = new JFrame("时间显示");
        jl = new JLabel();
        jf.getContentPane().add(jl);
        jf.setSize(200, 100);
    }

    public void run() {
        while (true) {
            SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
            jl.setText(sdf.format(new Date()));
            try {
                Thread.sleep(1000);
            } catch (Exception e) {
                jl.setText("出错错误，请重启程序");
            }
        }
    }

    public static void main(String arg[]) {
        ShowTime t = new ShowTime();
        Thread thread1 = new Thread(t);
        thread1.start();
        jf.setVisible(true);
    }
}