JAVA多线程实现简单的点名系统

效果图如下：

CMain函数：

package com.shubing.main;

public class CMain
{
    public static void main(String[] args) 
    {
        MainFrame mainFrame = new MainFrame();
        mainFrame.setVisible(true);
    }
}

MainFrame函数：

package com.shubing.main;

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

public class MainFrame extends JFrame implements ActionListener
{
    public static boolean flag = false;
    public JButton enter = new JButton("确定");
    public JButton exit = new JButton("退出");
    public JLabel text = new JLabel("点名");
    public JLabel name = new JLabel("姓名");
    public String[] nameList = {"王一","刘二","赵三","周四","马五","龙六","张七","贾八","钟九"};
    public JLabel message = new JLabel("学生总数："+nameList.length);
    public EnterThread mainThread = null;
    public MainFrame()
    {
        this.setTitle("点名系统");
        this.setSize(230,150);
        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        this.setLocationRelativeTo(null);
        this.setLayout(null);    //布局为空;
        this.setFocusable(false);
    
        text.setBounds(20, 10, 100, 30);
        name.setBounds(100, 10, 180, 30);
        enter.setBounds(20, 50, 80, 20);
        exit.setBounds(110, 50, 80, 20);
        message.setBounds(120, 80, 100, 20);
        
        this.add(text);
        this.add(name);
        this.add(enter);
        this.add(exit);
        this.add(message);
        
        enter.setEnabled(true);
        exit.setEnabled(false);
        
        Font font = new Font("华文行楷",Font.BOLD,22);
        this.text.setFont(font);
        this.name.setFont(font);
        
        enter.addActionListener(this);
        exit.addActionListener(this);
    }
    
    @Override
    public void actionPerformed(ActionEvent e) 
    {
        if(e.getSource() == enter)
        {
            mainThread = new EnterThread(this);
            mainThread.start();
            enter.setEnabled(false);
            exit.setEnabled(true);
        }
        if(e.getSource() == exit)
        {
            new ExitThread(this).start();
            exit.setEnabled(false);
        }
        
    }
    
}

EnterThread函数：

package com.shubing.main;

public class EnterThread extends Thread
{
    private MainFrame mainFrame = null;
    private boolean isStop = true;
    public int time = 50;
    
    public EnterThread(MainFrame mainFrame)
    {
        this.mainFrame = mainFrame;
    }
    public void stopThread()
    {
        this.isStop = false;
    }
    public void run()
    {
        try 
        {
            int index = 0;
            while(isStop)
            {
                if(index == this.mainFrame.nameList.length)
                {
                    index = 0;
                }
                this.mainFrame.name.setText(mainFrame.nameList[index]);
                index ++;

                Thread.sleep(time);
            }
        } 
        catch (InterruptedException e) 
        {
            e.printStackTrace();
        }
        this.mainFrame.enter.setEnabled(true);
    }
}

ExitThread函数：

package com.shubing.main;

public class ExitThread extends Thread
{
    private MainFrame mainFrame = null;

    public ExitThread(MainFrame mainFrame)
    {
        this.mainFrame = mainFrame;
    }

    public void run()
    {
        try 
        {
            for(int i=0;i<=400;i+=50)
            {
                this.mainFrame.mainThread.time += i;
                sleep(1600);
            }
        } 
        catch (InterruptedException e) 
        {
            e.printStackTrace();
        }
        mainFrame.mainThread.stopThread();
    }
}