GUI的简单应用，打地鼠游戏

首先是GUI的知识清单：

 

 

源代码：

package jd1908_corejava.ch14.work;

//打地鼠小游戏
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.Timer;

public class HitMouse extends JFrame implements ActionListener {
    // 容器模块
    private JPanel north, center;
    //
    private JLabel timeLabel, timeValueLabel, centLabel, centValueLabel;
    // 下拉菜单
    private JComboBox<String> box;
    private JButton startButton;

    private JButton[] buttons;
    // 图片
    private ImageIcon icon;
    // 等级
    private int level;
    // 是否可以加分的状态
    private boolean flag;

    private int old_index;
    // 游戏计时器
    private Timer timer;
    // 老鼠跳动计数器
    private Timer mouseTimer;

    public HitMouse() {
        this.setTitle("打地鼠");
        // this.setBounds(200, 200, 1000, 1300);
        this.setSize(500, 600);
        this.setLocation((int) (Toolkit.getDefaultToolkit().getScreenSize().getWidth() - this.getWidth()) / 2,
                (int) (Toolkit.getDefaultToolkit().getScreenSize().getHeight() - this.getHeight()) / 2);

        ;
        this.init();

        this.setVisible(true);
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    private void init() {
        north = new JPanel();
        center = new JPanel();
        timeLabel = new JLabel("time");
        timeValueLabel = new JLabel("10");
        centLabel = new JLabel("cent");
        centValueLabel = new JLabel("0");
        startButton = new JButton("开始");
        buttons = new JButton[9];
        box = new JComboBox<String>();
        box.addItem("初级");
        box.addItem("中级");
        box.addItem("高级");
        icon = new ImageIcon("a.png");
        // 默认布局
        north.setLayout(new FlowLayout());
        north.add(timeLabel);
        north.add(timeValueLabel);
        north.add(box);
        north.add(centLabel);
        north.add(centValueLabel);
        north.add(startButton);

        center.setLayout(new GridLayout(3, 3));
        for (int i = 0; i < buttons.length; i++) {
            buttons[i] = new JButton();
            // 锁定格子
            buttons[i].setEnabled(false);
            center.add(buttons[i]);
        }

        this.add(north, BorderLayout.NORTH);
        this.add(center, BorderLayout.CENTER);

        
        
        
        
        
        startButton.addActionListener(this);
        box.addActionListener(this);
        //!!!
        for (int i = 0; i < buttons.length; i++) {
            buttons[i].addActionListener(this);
        }
        timer = new Timer(1000, new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                String text = timeValueLabel.getText();
                int time = Integer.parseInt(text);
                timeValueLabel.setText(--time + "");
                if (time == 0) {
                    startButton.setEnabled(true);
                    buttons[old_index].setIcon(null);
                    box.setEnabled(true);
                    timer.stop();
                    mouseTimer.stop();
                    setAllButtonsEnable(false);
                }

            }
        });
        level = 2000;
        mouseTimer = new Timer(level, new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                buttons[old_index].setIcon(null);
                int index = (int) (Math.random() * 9);
                // 随机让九宫格出现老鼠
                buttons[index].setIcon(icon);
                old_index = index;
                flag = true;
                setAllButtonsEnable(true);

            }
        });
    }

    protected void setAllButtonsEnable(boolean b) {
        for (int i = 0; i < buttons.length; i++) {
            buttons[i].setEnabled(b);
        }

    }

    public static void main(String[] args) {
        new HitMouse();
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        Object source = e.getSource();
        if (source.equals(startButton)) {
            timer.start();
            mouseTimer.start();
            timeValueLabel.setText("10");
            centValueLabel.setText("0");
            // 锁定等级和开始
            startButton.setEnabled(false);
            box.setEnabled(false);
        } else if (source.equals(box)) {
            int index = box.getSelectedIndex();
            if (index == 1) {
                level = 500;
            } else if (index == 2) {
                level = 200;
            } else {
                level = 2000;
            }
            mouseTimer.setDelay(level);
        } else {
            JButton btn = (JButton) source;
            if (btn.getIcon() != null && flag) {
                String str = centValueLabel.getText();
                int cent = Integer.parseInt(str);
                centValueLabel.setText(++cent + "");
                flag = false;
            }
        }
    }
}