本文是java掃雷程式的開發，是對http://blog.csdn.net/ping_qc/article/details/7166092的java程式改進，在基礎不變的基礎上增加了右鍵標記功能以及自主選擇難度功能

package game; 

import java.awt.event.ActionEvent;  
import java.awt.event.ActionListener;  
import java.awt.event.MouseEvent;  
import java.awt.event.MouseListener;  
  
import javax.swing.JButton;  
import javax.swing.JFrame;  
import javax.swing.JLabel;  
  

public class Test extends JFrame implements ActionListener, Runnable,  
        MouseListener {   
    private final int loEMPTY         = 0;  
    private final int loMINE          = 1;  
    private final int loCHECKED       = 2;  
    private final int loMINE_COUNT    = 10; 
    private final int loBUTTON_BORDER = 50;  
    private final int loMINE_SIZE     = 10; 
    private final int loSTART_X       = 20;   
    private final int loSTART_Y       = 50;   
  
    private boolean flag;  
    private JButton[][] jb;  
    private JLabel jl;  
    private JLabel showTime;  
    private int[][] map;  

    private int[][] mv = { { -1, 0 }, { -1, 1 }, { 0, 1 }, { 1, 1 }, { 1, 0 },  
            { 1, -1 }, { 0, -1 }, { -1, -1 } };  

    public void makeloMINE() {  
        int i = 0, tx, ty;  
        for (; i < loMINE_COUNT;) {  
            tx = (int) (Math.random() * loMINE_SIZE);  
            ty = (int) (Math.random() * loMINE_SIZE);  
            if (map[tx][ty] == loEMPTY) {  
                map[tx][ty] = loMINE;  
                i++; 
            }  
        }  
    }  
  

    public void makeButton() {  
        for (int i = 0; i < loMINE_SIZE; i++) {  
            for (int j = 0; j < loMINE_SIZE; j++) {  
                jb[i][j] = new JButton();  
                jb[i][j].addActionListener(this);  
                jb[i][j].addMouseListener(this);  
  
                jb[i][j].setName(i + "_" + j); 

                jb[i][j].setBounds(j * loBUTTON_BORDER + loSTART_X, i  
                        * loBUTTON_BORDER + loSTART_Y, loBUTTON_BORDER, loBUTTON_BORDER);  
                this.add(jb[i][j]);  
            }  
        }  
    }  
  
    public void init() {  
  
        flag = false;  
  
        jl.setText("歡迎測試，一共有" + loMINE_COUNT + "個雷");  
        jl.setVisible(true);  
        jl.setBounds(20, 20, 500, 30);  
        this.add(jl);  
  
        showTime.setText("已用時：0 秒");  
        showTime.setBounds(400, 20, 100, 30);  
        this.add(showTime);  
  
        makeloMINE();  
        makeButton();  
        this.setSize(550, 600);  
        this.setLocation(700, 100);  
        this.setResizable(false);  
        this.setDefaultCloseOperation(EXIT_ON_CLOSE);  
        this.setVisible(true);  
    }  
  
    public Test(String title) {  
        super(title);  
  
        this.setLayout(null);   //不使用佈局管理器，每個控制元件的位置用setBounds設定  
          
        jb = new JButton[loMINE_SIZE][loMINE_SIZE];  
        jl = new JLabel();  
        showTime = new JLabel();  
        map = new int[loMINE_SIZE][loMINE_SIZE]; // 將按鈕對映到陣列中  
    }  
  
    public static void main(String[] args) {  
        Test test = new Test("Hello loMINEr!");  
        test.init();  
        test.run();  
    }  
  
    @Override  
    public void actionPerformed(ActionEvent e) {  
  
        Object obj = e.getSource();  
        int x, y;  
        if ((obj instanceof JButton) == false) {  
            showMessage("錯誤", "內部錯誤");  
            return;  
        }  
        String[] tmp_str = ((JButton) obj).getName().split("_");  
        x = Integer.parseInt(tmp_str[0]);  
        y = Integer.parseInt(tmp_str[1]);  
  
        if (map[x][y] == loMINE) {  
            showMessage("死亡", "你踩到地雷啦~~~");  
            flag = true;  
            showloMINE();  
            return;  
        }  
        dfs(x, y, 0);  
  
        checkSuccess();  
    }  
  
 
    private void checkSuccess() {  
        int cnt = 0;  
        for (int i = 0; i < loMINE_SIZE; i++) {  
            for (int j = 0; j < loMINE_SIZE; j++) {  
                if (jb[i][j].isEnabled()) {  
                    cnt++;  
                }  
            }  
        }  
        if (cnt == loMINE_COUNT) {  
            String tmp_str = showTime.getText();  
            tmp_str = tmp_str.replaceAll("[^0-9]", "");  
            showMessage("勝利", "本次掃雷共用時：" + tmp_str + "秒");  
            flag = true;  
            showloMINE();  
        }  
    }  
  
    private int dfs(int x, int y, int d) {  
        map[x][y] = loCHECKED;  
        int i, tx, ty, cnt = 0;  
        for (i = 0; i < 8; i++) {  
            tx = x + mv[i][0];  
            ty = y + mv[i][1];  
            if (tx >= 0 && tx < loMINE_SIZE && ty >= 0 && ty < loMINE_SIZE) {  
                if (map[tx][ty] == loMINE) {  
                    cnt++;
                } else if (map[tx][ty] == loEMPTY) {  
                    ;  
                } else if (map[tx][ty] == loCHECKED) {  
                    ;  
                }  
            }  
        }  
        if (cnt == 0) {  
            for (i = 0; i < 8; i++) {  
                tx = x + mv[i][0];  
                ty = y + mv[i][1];  
                if (tx >= 0 && tx < loMINE_SIZE && ty >= 0 && ty < loMINE_SIZE  
                        && map[tx][ty] != loCHECKED) {  
                    dfs(tx, ty, d + 1);  
                }  
            }  
        } else {  
            jb[x][y].setText(cnt + "");  
        }  
        jb[x][y].setEnabled(false);  
        return cnt;  
    }  

    private void showMessage(String title, String info) {  
        jl.setText(info);  
        System.out.println("in functino showMessage()  :  " + info);  
    }  
  
    public void run() {  
        int t = 0;  
        while (true) {  
            if (flag) {  
                break;  
            }  
            try {  
                Thread.sleep(1000);  
            } catch (InterruptedException e) {  
                e.printStackTrace();  
            }  
            t++;  
            showTime.setText("已用時：" + t + " 秒");  
        }  
    }  
  
    private void showloMINE() {  
        for (int i = 0; i < loMINE_SIZE; i++) {  
            for (int j = 0; j < loMINE_SIZE; j++) {  
                if (map[i][j] == loMINE) {  
                    jb[i][j].setText("雷");   
                }  
            }  
        }  
    }  
 
    public void mouseClicked(MouseEvent e) {  
        if (e.getButton() == 3) {  
            Object obj = e.getSource();  
            if ((obj instanceof JButton) == false) {  
                showMessage("錯誤", "內部錯誤");  
                return;  
            }  
            String[] tmp_str = ((JButton) obj).getName().split("_");  
            int x = Integer.parseInt(tmp_str[0]);  
            int y = Integer.parseInt(tmp_str[1]);  
        if ("{1}quot".equals(jb[x][y].getText())) {  
                jb[x][y].setText("");  
            } else {  
                jb[x][y].setText("{1}quot");  
            }  
        }  
    }  
  
    
    public void mousePressed(MouseEvent e) {  
        
  
    }  
  
    @Override  
    public void mouseReleased(MouseEvent e) {  
       
  
    }  
  
     
    public void mouseEntered(MouseEvent e) {  
        
    }  
  
    @Override  
    public void mouseExited(MouseEvent e) {  
         
  
    }  
}