在龟兔赛跑中，领先的兔子因为通宵写博客，中途太累睡着了，跑输了乌龟。这个故事说明了兔子是爱学习的同学。咳咳，通宵是不可取的，大家别学。
实现：使用线程休眠模拟龟兔赛跑比赛
创建一个类：RaceFrame，继承了JFrame。用来界面显示两个文本区域，用来输出乌龟和兔子的比赛记录，比赛开始按钮用来开始比赛。
编写内部类：Rabbit,该类实现了Runnable接口，在run()方法中，让兔子休眠了时间。
Thread是程序中的执行线程。JAVA虚拟机允许应用程序并发地运行多个执行线程。
sleep()方法是Thread类的一个静态方法。
package com.xiaoxuzhu;
import java.awt.BorderLayout;
import java.awt.EventQueue;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.border.EmptyBorder;
import javax.swing.JButton;
import java.awt.GridLayout;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.SwingConstants;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import javax.swing.UIManager;
import java.awt.Font;
/**
* Description:
*
* @author xiaoxuzhu
* @version 1.0
*
* <pre>
* 修改记录:
* 修改后版本 修改人 修改日期 修改内容
* 2022/5/11.1 xiaoxuzhu 2022/5/11 Create
* </pre>
* @date 2022/5/11
*/
public class RaceFrame extends JFrame {
/**
*
*/
private static final long serialVersionUID = 4941729012450153307L;
private JPanel contentPane;
private JTextArea rabbitTextArea;
private JTextArea tortoiseTextArea;
/**
* Launch the application.
*/
public static void main(String[] args) {
try {
UIManager.setLookAndFeel("com.sun.java.swing.plaf.nimbus.NimbusLookAndFeel");
} catch (Throwable e) {
e.printStackTrace();
}
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
RaceFrame frame = new RaceFrame();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
/**
* Create the frame.
*/
public RaceFrame() {
setTitle("休眠当前线程");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 450, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(new BorderLayout(0, 0));
JPanel buttonPanel = new JPanel();
contentPane.add(buttonPanel, BorderLayout.SOUTH);
JButton button = new JButton("比赛开始");
button.setFont(new Font("微软雅黑", Font.PLAIN, 16));
button.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
do_button_actionPerformed(arg0);
}
});
buttonPanel.add(button);
JPanel panel = new JPanel();
contentPane.add(panel, BorderLayout.CENTER);
panel.setLayout(new GridLayout(1, 2, 5, 5));
JPanel rabbitPanel = new JPanel();
panel.add(rabbitPanel);
rabbitPanel.setLayout(new BorderLayout(0, 0));
JLabel rabbitLabel = new JLabel("兔子的比赛记录");
rabbitLabel.setFont(new Font("微软雅黑", Font.PLAIN, 16));
rabbitLabel.setHorizontalAlignment(SwingConstants.CENTER);
rabbitPanel.add(rabbitLabel, BorderLayout.NORTH);
JScrollPane rabbitScrollPane = new JScrollPane();
rabbitPanel.add(rabbitScrollPane, BorderLayout.CENTER);
rabbitTextArea = new JTextArea();
rabbitTextArea.setFont(new Font("微软雅黑", Font.PLAIN, 16));
rabbitScrollPane.setViewportView(rabbitTextArea);
JPanel tortoisePanel = new JPanel();
panel.add(tortoisePanel);
tortoisePanel.setLayout(new BorderLayout(0, 0));
JLabel tortoiseLabel = new JLabel("乌龟的比赛记录");
tortoiseLabel.setFont(new Font("微软雅黑", Font.PLAIN, 16));
tortoiseLabel.setHorizontalAlignment(SwingConstants.CENTER);
tortoisePanel.add(tortoiseLabel, BorderLayout.NORTH);
JScrollPane tortoiseScrollPane = new JScrollPane();
tortoisePanel.add(tortoiseScrollPane, BorderLayout.CENTER);
tortoiseTextArea = new JTextArea();
tortoiseTextArea.setFont(new Font("微软雅黑", Font.PLAIN, 16));
tortoiseScrollPane.setViewportView(tortoiseTextArea);
}
protected void do_button_actionPerformed(ActionEvent arg0) {
Runnable run1 = new Rabbit();
Runnable run2 = new Tortoise();
Thread rabbit = new Thread(run1);
Thread tortoise = new Thread(run2);
rabbit.start();
tortoise.start();
}
private class Rabbit implements Runnable {
@Override
public void run() {
for (int i = 1; i < 11; i++) {// 循环10次模拟赛跑的过程
String text = rabbitTextArea.getText();// 获得文本域中的信息
try {
Thread.sleep(1);// 线程休眠0.001秒，模拟兔子在跑步
} catch (InterruptedException e) {
e.printStackTrace();
}
rabbitTextArea.setText(text + "兔子跑了" + i + "0米\n");// 显示兔子的跑步距离
if (i == 9) {
rabbitTextArea.setText(text + "兔子在睡觉\n");// 当跑了90米时开始睡觉
try {
Thread.sleep(10000);// 线程休眠10秒，模拟兔子在睡觉
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if (i == 10) {
try {
Thread.sleep(1);// 线程休眠0.001秒，模拟兔子在跑步
} catch (InterruptedException e) {
e.printStackTrace();
}
rabbitTextArea.setText(text + "兔子到达终点\n");// 显示兔子到达了终点
}
}
}
}
private class Tortoise implements Runnable {
@Override
public void run() {
for (int i = 1; i < 11; i++) {
String text = tortoiseTextArea.getText();
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
tortoiseTextArea.setText(text + "乌龟跑了" + i + "0米\n");
if (i == 10) {
try {
Thread.sleep(100);
} catch (InterruptedException e) {
e.printStackTrace();
}
tortoiseTextArea.setText(text + "乌龟到达终点\n");
}
}
}
}
}
