猜数字游戏代码,Java代码库,德仔网

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【Java】猜数字游戏

作者:Dezai.CN / 发布于2011/7/13/ 620

这是一个猜数字的游戏。用户输入 1~1000 以内的任意数字，程序给出它是大了还是小了，直到猜出正确的结果。

import javax.swing.*;
import java.awt.BorderLayout;
import java.awt.event.ActionListener;
import java.awt.event.ActionEvent;
import java.util.Random;

/**
* 猜数字
*/
public class GuessNumber extends JFrame {

 private Random r = new Random();

 private int result = r.nextInt(1000) + 1;

 private int counter = 0;

 private boolean finished = false;

 private GuessNumber thisFrame = this;

 private ActionListener guessButtonListener = new ActionListener() {
 public void actionPerformed(ActionEvent e) {
 if (!finished) {
 String user_guess = textbox.getText();
 if (user_guess.length() == 0) {
 messageLabel.setText("输入文本不能为空。");
 } else {
 try {
 int guess = Integer.parseInt(user_guess);
 counter++;

 if (guess < result) {
 messageLabel.setText("你输入的数字 " + guess + " 比结果小。");
 } else if (guess > result) {
 messageLabel.setText("你输入的数字 " + guess + " 比结果大。");
 } else {
 finished = true;
 messageLabel.setText("OK，经过" + counter + "次猜测，你终于猜中了。");
 button.setText("再来一次");
 }
 } catch (NumberFormatException e1) {
 messageLabel.setText("请输入数字。");
 }
 }
 } else {
 result = r.nextInt(1000) + 1;
 counter = 0;
 finished = false;
 messageLabel.setText("请输入一个 1~1000 之内的数字。");
 button.setText("猜一猜");
 thisFrame.setTitle(String.valueOf(result));
 }
 }
 };

 private JTextField textbox = new JTextField();

 private JLabel messageLabel = new JLabel("请输入一个 1~1000 之内的数字。");

 private JButton button = new JButton("猜一猜");

 public static void main(String[] args) {
 GuessNumber frame = new GuessNumber();
 frame.setVisible(true);
 }

 public GuessNumber() {
 super("猜数字");
 this.setDefaultCloseOperation(EXIT_ON_CLOSE);
 this.setSize(400, 200);
 this.setLocation(200, 200);
 this.setResizable(false);

 setupContentPane();
 setupControls();
 this.setTitle(String.valueOf(result));
 }

 private void setupContentPane() {
 JPanel contentPane = new JPanel(new BorderLayout());
 contentPane.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
 this.setContentPane(contentPane);
 }

 private void setupControls() {
 JPanel topPanel = new JPanel(new BorderLayout());
 setupTupPanel(topPanel);
 this.add(topPanel, BorderLayout.NORTH);
 this.add(messageLabel, BorderLayout.CENTER);
 }

 private void setupTupPanel(JPanel panel) {
 panel.add(textbox, BorderLayout.CENTER);
 button.addActionListener(guessButtonListener);
 panel.add(button, BorderLayout.EAST);
 }
}

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　猜数字游戏　

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