.

.project

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>Java项目开发</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

author.txt

@@ -0,0 +1,5 @@
+本软件——数独小游戏，由北京林业大学信
+息学院计算机08-2班徐犇同学开发，后由曲
+靖师范学院信息工程学院物联网工程专业20
+211441班Java第七小组完善，请勿用于商业
+目的！

game

@@ -1 +0,0 @@
-undefined

game/BackgroundMusicPlayer.java

@@ -0,0 +1,39 @@
+package game;
+
+import java.applet.Applet;
+import java.applet.AudioClip;
+import java.net.URL;
+
+public class BackgroundMusicPlayer {//背景音乐
+
+    private AudioClip clip;
+
+    public BackgroundMusicPlayer(String filename) {
+        try {
+            URL url = getClass().getResource(filename);
+            clip = Applet.newAudioClip(url);
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public void play() {
+        clip.loop();
+    }
+
+    public void stop() {
+        clip.stop();
+    }
+}
+
+/*使用方法：
+BackgroundMusicPlayer bgm = new BackgroundMusicPlayer("爱于海 - 菊次郎的夏天 钢琴独奏（翻自 久石让）.wav");
+bgm.play();// 背景音乐开始播放
+bgm.stop();// 背景音乐停止播放
+
+说明：
+1. 通过调用 `BackgroundMusicPlayer` 的构造方法并传入音乐文件名，创建一个 `BackgroundMusicPlayer` 对象。
+2. 调用 `play()` 方法开始播放背景音乐，调用 `stop()` 方法停止播放背景音乐。
+3. 音乐文件应放置在与代码文件同一目录下，或使用相对路径或绝对路径指定其位置。
+4. `AudioClip` 类提供了许多其他方法供控制音频播放，可以根据需要进行调用。*/
+

game/ImageApp.java

@@ -0,0 +1,54 @@
+package game;
+
+
+import java.awt.Graphics;
+
+import javax.swing.ImageIcon;
+
+import javax.swing.JFrame;
+import javax.swing.JOptionPane;
+import javax.swing.JPanel;
+
+//----------------------------------------------过关动画
+public class ImageApp extends JFrame {
+
+public ImageApp(String message) {
+
+setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);//关闭当前窗口
+
+setLocation(650, 250);
+
+setSize(620, 620);
+
+setResizable(false);//设置此窗体是否可由用户调整大小。
+
+getContentPane().setLayout(null);
+
+JPanel panel = new ImagePanel();
+
+panel.setBounds(0, 0,620, 620);
+
+getContentPane().add(panel);
+
+setVisible(true); 
+
+JOptionPane.showMessageDialog(this, message);
+
+}
+
+class ImagePanel extends JPanel {
+
+public void paint(Graphics g) {
+
+super.paint(g);
+
+ImageIcon icon = new ImageIcon("game\\QQ图片20230609162434.jpg");
+
+g.drawImage(icon.getImage(), 0, 0, 620, 620, this);
+
+} 
+
+}
+
+}
+

game/Main.java

@@ -0,0 +1,9 @@
+package game;
+
+public class Main {
+public static void main(String[] args) {
+		
+		new SDgame();	
+	
+	}
+}

game/SDgame.java

@@ -0,0 +1,566 @@
+package game;
+
+
+import java.awt.*;
+import java.awt.event.*;
+import java.io.*;
+import java.util.*;
+import javax.swing.*;
+import javax.swing.border.*;
+
+
+public class SDgame extends JFrame implements ActionListener, KeyListener {
+	private static final long serialVersionUID = 1L;
+	Container con;//申明容器
+	JPanel control;//申明面板容器	
+	Toolkit toolkit = this.getToolkit();//得到窗口工具条
+	JMenuItem newGame = new JMenuItem("新建游戏");//菜单项
+	JMenuItem saveGame = new JMenuItem("保存游戏");
+	JMenuItem exitGame = new JMenuItem("退出游戏");
+	JMenuItem showMusic = new JMenuItem("显示所有窗口");
+	JMenuItem showInformationOfAuthor = new JMenuItem("关于作者");
+	JMenuItem rule = new JMenuItem("游戏规则");
+	JMenuItem nextStep = new JMenuItem("前进一步");
+	JMenuItem lastStep = new JMenuItem("后退一步");		
+	JMenuItem off = new JMenuItem("关闭音乐");
+	JMenu open = new JMenu("打开音乐");	
+	JMenuItem Music0 = new JMenuItem("下雨天");
+	JMenuItem Music1 = new JMenuItem("卡农");
+	JMenuItem Music2 = new JMenuItem("Flower Dance");
+	JMenuItem Music3 = new JMenuItem("菊次郎的夏天");
+	JMenuItem red = new JMenuItem("红色");
+	JMenu menuColor = new JMenu("填入字体颜色");	
+	JMenuItem orange = new JMenuItem("橙色");
+	JMenuItem blue = new JMenuItem("蓝色");	
+	JMenuItem pink = new JMenuItem("粉色");	
+	JMenuItem green = new JMenuItem("绿色");
+	JMenuItem yellow = new JMenuItem("黄色");	
+		
+	// /////////////////////////////////////////////////////////////////////////////////
+	ArrayList<Step> stepArray = new ArrayList<Step>();
+	int currentStep = stepArray.size() - 1;	
+	BackgroundMusicPlayer music0 = new BackgroundMusicPlayer("锦鲤 - 下雨天Piano ver..wav");
+	BackgroundMusicPlayer music1 = new BackgroundMusicPlayer("jentlemo - 卡农（钢琴版）(1).wav");
+	BackgroundMusicPlayer music2 = new BackgroundMusicPlayer("PianoPanda - Flower Dance（钢琴版I）.wav");
+	BackgroundMusicPlayer music3 = new BackgroundMusicPlayer("爱于海 - 菊次郎的夏天 钢琴独奏（翻自 久石让）.wav");
+	BackgroundMusicPlayer victoerymusic = new BackgroundMusicPlayer(" ");
+	int forcusX = 0, forcusY = 0;//焦点	
+	int[][] itemTotal = new int[9][9];//数独数组
+	public boolean [][]itemtoal=new boolean[9][9];	//数独伴生数组，用于固定系统给出数子的标签
+	Color typecolor=Color.red;//用于修改字体颜色的对象
+	JButton[][] buttonNum = new JButton[9][9];//创建标签按钮	
+	Font font = new Font("", Font.BOLD, 35);//标签按钮字体
+	Border Green = BorderFactory.createLineBorder(Color.white);//界面边框颜色
+	Border raisedBevel = BorderFactory.createRaisedBevelBorder();//创建凸出边框
+	Border border = BorderFactory.createCompoundBorder(raisedBevel, Green);//创建复合边框
+	long starttime = -1, overtime = -1; // 游戏开始和结束的时间
+	int easyLevel = 0; // 控制游戏的难易程度
+	// ///////////////////////////////////////////////////////////////////////////////键盘事件监听
+
+	public void keyPressed(KeyEvent e) {
+		if (starttime < 0) {// 游戏还未开始,返回
+			return;
+		}
+		int keycode = e.getKeyCode();
+		int num = -1;
+		switch (keycode) {
+		case KeyEvent.VK_DELETE:
+			num = 0;
+			break;
+		case KeyEvent.VK_1:
+			num = 1;
+			break;
+		case KeyEvent.VK_2:
+			num = 2;
+			break;
+		case KeyEvent.VK_3:
+			num = 3;
+			break;
+		case KeyEvent.VK_4:
+			num = 4;
+			break;
+		case KeyEvent.VK_5:
+			num = 5;
+			break;
+		case KeyEvent.VK_6:
+			num = 6;
+			break;
+		case KeyEvent.VK_7:
+			num = 7;
+			break;
+		case KeyEvent.VK_8:
+			num = 8;
+			break;
+		case KeyEvent.VK_9:
+			num = 9;
+			break;
+		case KeyEvent.VK_NUMPAD1:
+			num = 1;
+			break;
+		case KeyEvent.VK_NUMPAD2:
+			num = 2;
+			break;
+		case KeyEvent.VK_NUMPAD3:
+			num = 3;
+			break;
+		case KeyEvent.VK_NUMPAD4:
+			num = 4;
+			break;
+		case KeyEvent.VK_NUMPAD5:
+			num = 5;
+			break;
+		case KeyEvent.VK_NUMPAD6:
+			num = 6;
+			break;
+		case KeyEvent.VK_NUMPAD7:
+			num = 7;
+			break;
+		case KeyEvent.VK_NUMPAD8:
+			num = 8;
+			break;
+		case KeyEvent.VK_NUMPAD9:
+			num = 9;
+			break;
+		case KeyEvent.VK_UP:
+			forcusX--;
+			toolkit.beep();
+			break;
+		case KeyEvent.VK_DOWN:
+			forcusX++;
+			toolkit.beep();
+			break;
+		case KeyEvent.VK_LEFT:
+			forcusY--;
+			toolkit.beep();
+			break;
+		case KeyEvent.VK_RIGHT:
+			forcusY++;
+			toolkit.beep();
+			break;
+		}
+		if (num >= 0&&itemtoal[forcusX][forcusY]==true) {
+			stepArray.add(new Step(forcusX, forcusY, num,
+					itemTotal[forcusX][forcusY]));
+			itemTotal[forcusX][forcusY] = num;//将输入的数字填入标签按钮
+			currentStep++;
+			showNumOnButtons(itemTotal);
+			this.lastStep.setEnabled(true);			
+			showColorOnButtons();
+			if (SDgame.judge(itemTotal))				
+				showWinGame();
+		}else {
+			if (forcusX < 0)
+				forcusX = 0;
+			if (forcusX > 8)
+				forcusX = 8;
+			if (forcusY < 0)
+				forcusY = 0;
+			if (forcusY > 8)
+				forcusY = 8;
+		}
+		showColorOnButtons();
+	}
+
+	public void keyTyped(KeyEvent e) {
+	}
+
+	public void keyReleased(KeyEvent e) {
+	}
+
+	// ///////////////////////////////////////////////////////////////////////////////
+	public void excuteStep(Step step, boolean flag) {
+		if (flag) {
+			itemTotal[step.x][step.y] = step.newnum;
+		} else
+			itemTotal[step.x][step.y] = step.orinum;
+		this.showNumOnButtons(itemTotal);
+	}
+
+	public SDgame() {		
+		music0.play();//播放默认背景音乐
+		for (int i = 0; i < 9; i++) {
+			for (int j = 0; j < 9; j++) {
+				buttonNum[i][j] = new JButton("");
+				buttonNum[i][j].setFont(font);
+				buttonNum[i][j].setBackground(Color.white);	//将标签按钮颜色改为白色			 
+				buttonNum[i][j].addActionListener(this);
+				buttonNum[i][j].addKeyListener(this);				
+			}
+		}
+		// ////////////////////////////////////////////
+		JMenu menuFile = new JMenu("游戏");		
+		menuFile.add(newGame);
+		newGame.addActionListener(this);
+		menuFile.add(saveGame);
+		saveGame.addActionListener(this);
+		menuFile.add(exitGame);
+		exitGame.addActionListener(this);
+		JMenu menuEdit = new JMenu("编辑");		
+		menuEdit.add(lastStep);
+		lastStep.addActionListener(this);
+		menuEdit.add(nextStep);
+		nextStep.addActionListener(this);	
+		JMenu menuView = new JMenu("音乐");	
+		menuView.add(off);
+		off.addActionListener(this);
+		open.add(Music0);		
+		Music0.addActionListener(this);
+		menuView.add(open);
+		open.add(Music1);		
+		Music1.addActionListener(this);
+		open.add(Music2);
+		Music2.addActionListener(this);	
+		open.add(Music3);
+		Music3.addActionListener(this);	
+		JMenu menuTool = new JMenu("设置");		
+		menuTool.add(menuColor);	
+		menuColor.add(red);	
+		red.addActionListener(this);
+		menuColor.add(orange);	
+		orange.addActionListener(this);
+		menuColor.add(blue);	
+		blue.addActionListener(this);
+		menuColor.add(pink);
+		pink.addActionListener(this);
+		menuColor.add(green);	
+		green.addActionListener(this);
+		menuColor.add(yellow);		
+		JMenu menuHelp = new JMenu("帮助");		
+		menuHelp.add(showInformationOfAuthor);
+		menuHelp.add(rule);
+		rule.addActionListener(this);
+		showInformationOfAuthor.addActionListener(this);
+		JMenuBar menuBar = new JMenuBar();
+		menuBar.add(menuFile);
+		menuBar.add(menuEdit);
+		menuBar.add(menuView);
+		menuBar.add(menuTool);
+		menuBar.add(menuHelp);			
+		this.setJMenuBar(menuBar);
+		// ////////////////////////////////////////////
+		con = this.getContentPane();
+		control = new JPanel();
+		control.setLayout(new GridLayout(3,3));
+		JPanel[] panelNum = new JPanel[9];
+		for (int i = 0; i < 9; i++) {
+			panelNum[i] = new JPanel();
+			panelNum[i].setLayout(new GridLayout(3,3 ));
+			panelNum[i].add(buttonNum[(i / 3) * 3][(i % 3) * 3]);
+			panelNum[i].add(buttonNum[(i / 3) * 3][(i % 3) * 3 + 1]);
+			panelNum[i].add(buttonNum[(i / 3) * 3][(i % 3) * 3 + 2]);
+			panelNum[i].add(buttonNum[(i / 3) * 3 + 1][(i % 3) * 3]);
+			panelNum[i].add(buttonNum[(i / 3) * 3 + 1][(i % 3) * 3 + 1]);
+			panelNum[i].add(buttonNum[(i / 3) * 3 + 1][(i % 3) * 3 + 2]);
+			panelNum[i].add(buttonNum[(i / 3) * 3 + 2][(i % 3) * 3]);
+			panelNum[i].add(buttonNum[(i / 3) * 3 + 2][(i % 3) * 3 + 1]);
+			panelNum[i].add(buttonNum[(i / 3) * 3 + 2][(i % 3) * 3 + 2]);
+			panelNum[i].setBorder(border);
+			control.add(panelNum[i]);
+		}
+		
+		this.saveGame.setEnabled(false);
+		this.lastStep.setEnabled(false);
+		this.nextStep.setEnabled(false);
+		con.add(new JScrollPane(control));		
+		this.setTitle("数独小游戏");
+		this.setLocation(650, 250);
+		this.setSize(620, 620);
+		this.setVisible(true);
+		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
+	}
+
+	public void actionPerformed(ActionEvent ae) {
+		if (ae.getSource() == lastStep) {
+			if (currentStep >= 0)
+				this.excuteStep(stepArray.get(currentStep), false);
+			if (currentStep > 0) {
+				currentStep--;
+				this.nextStep.setEnabled(true);
+			} else
+				lastStep.setEnabled(false);
+		} else if (ae.getSource() == nextStep) {
+			if (currentStep < stepArray.size())
+				this.excuteStep(stepArray.get(currentStep), true);
+			if (currentStep < stepArray.size() - 1) {
+				currentStep++;
+				this.lastStep.setEnabled(true);
+			} else
+				nextStep.setEnabled(false);
+		} else if (ae.getSource() == newGame) {
+			try {
+				String s = JOptionPane.showInputDialog(this, "请输入难度系数(0-81):");
+				if (s == null)
+					return;
+				int snum = Integer.parseInt(s);
+				if (snum >= 0 && snum <= 81) {
+					JOptionPane.showMessageDialog(this, "加油哦，小调皮！");
+					easyLevel = snum;
+				} else {
+					JOptionPane.showMessageDialog(this, "难度系数范围不正确，请重新输入！");
+					return;
+				}
+			} catch (NumberFormatException nfe) {
+				JOptionPane.showMessageDialog(this, "输入格式不正确，请重新输入！");
+				return;
+			}
+			itemTotal = getNewItems();//得到数独	
+			systemfontcolor();
+			fixation();
+			starttime = System.currentTimeMillis();
+			this.saveGame.setEnabled(true);
+			showNumOnButtons(itemTotal);
+			showColorOnButtons();
+		} else if (ae.getSource() == saveGame) {
+		} else if (ae.getSource() == exitGame) {
+			System.exit(0);
+		} else if (ae.getSource() == showInformationOfAuthor) {
+			String information = SDgame.getFileText("author.txt");
+			JOptionPane.showMessageDialog(this, information);
+		} else if (ae.getSource() == rule) {
+			String rule = SDgame.getFileText("rule.txt");
+			JOptionPane.showMessageDialog(this, rule);
+		} else if (ae.getSource() ==off ) {
+			music0.stop();
+			music1.stop();
+			music2.stop();
+			music3.stop();
+			
+		}else if (ae.getSource() ==Music0 ) {
+			music1.stop();
+			music2.stop();
+			music3.stop();
+			music0.play();
+		} else if (ae.getSource() ==Music1 ) {
+			music0.stop();
+			music2.stop();
+			music3.stop();
+			music1.play();
+		} else if (ae.getSource() ==Music2 ) {	
+			music0.stop();
+			music1.stop();
+			music3.stop();
+			music2.play();		
+		}else if (ae.getSource() ==Music3 ) {	
+			music0.stop();
+			music1.stop();
+			music2.stop();	
+			music3.play();	
+		}else if (ae.getSource() ==red ) {
+			typecolor=Color.red;
+		} else if (ae.getSource() ==orange ) {		
+			typecolor=Color.orange;	
+		} else if (ae.getSource() ==blue ) {
+			typecolor=Color.blue;
+		} else if (ae.getSource() ==pink ) {
+			typecolor=Color.pink;
+		} else if (ae.getSource() ==green ) {
+			typecolor=Color.green;
+		} else if (ae.getSource() ==yellow ) {
+			typecolor=Color.yellow;
+		}		
+		else {
+			if (starttime < 0) {// 游戏还未开始,返回
+				return;
+			}
+			JButton button = (JButton) ae.getSource();
+			// button.requestFocus();//申请得到焦点
+			// button.geta.getActionForKeyStroke(KeyStroke.);
+			int I = 0, J = 0;
+			for (I = 0; I < 9; I++) {// 找到发生事件的按钮的坐标
+				boolean ifFind = false;
+				for (J = 0; J < 9; J++) {
+					if (button == buttonNum[I][J]) {
+						ifFind = true;
+						break;
+					}
+				}
+				if (ifFind) {					
+					break;
+				}
+			}
+			forcusX = I;
+			forcusY = J;
+			showColorOnButtons();
+		}
+	}
+
+	
+	public void systemfontcolor() {//设置系统标签按钮字体颜色；
+		for(int i=0;i<9;i++) {
+			for(int j=0;j<9;j++)
+				buttonNum[i][j].setForeground(Color.black);
+		}
+	}
+	public static boolean judge(int[][] item) {// 整体判断当前是否已经正确填满
+		for (int i = 0; i < 9; i++) {
+			if (!SDgame.judgeLine(item[i]))
+				return false;
+		}
+		for (int j = 0; j < 9; j++) {
+			int[] temp = new int[9];
+			for (int i = 0; i < 9; i++) {
+				temp[i] = item[i][j];
+			}
+			if (!SDgame.judgeLine(temp))
+				return false;
+		}
+		int[][] newitem = SDgame.transformOfItems(item);
+		for (int i = 0; i < 9; i++) {
+			if (!SDgame.judgeLine(newitem[i]))
+				return false;
+		}
+		return true;
+	}
+
+	public static boolean judgeLine(int[] item) {// 判断一行是否符合数独规则
+		int[] temp = new int[9];
+		for (int i = 0; i < 9; i++) {
+			temp[i] = item[i];
+		}
+		Arrays.sort(temp);// 从小到大排序
+		for (int i = 0; i < 9; i++) {
+			if (temp[i] != i + 1)
+				return false;
+		}
+		return true;
+	}
+
+	public static int[][] transformOfItems(int[][] oriItem) {// 转换矩阵形式
+		int[][] result = new int[9][9];
+		for (int i = 0; i < 9; i++) {
+			int index = 0;
+			int n = (i / 3) * 3, m = (i % 3) * 3;
+			for (int j = n; j < n + 3; j++) {
+				for (int k = m; k < m + 3; k++) {
+					result[j][k] = oriItem[i][index++];
+				}
+			}
+		}
+		return result;
+	}
+	public boolean[][] fixation(){//初始化伴生数组
+		for(int i=0;i<9;i++) {
+			for(int j=0;j<9;j++) {
+				itemtoal[i][j]=false;
+			}
+		}
+		return itemtoal;
+	}	
+	public void showNumOnButtons(int[][] item) {// 把item里保存的值显示到按钮上
+		for (int i = 0; i < 9; i++) {
+			for (int j = 0; j < 9; j++) {				
+				if (item[i][j] == 0) {
+					buttonNum[i][j].setText("  ");
+					itemtoal[i][j]=true;
+					}
+				else {					
+					buttonNum[i][j].setText("" + item[i][j]);
+				}
+			}
+		}
+	}
+
+	public void showColorOnButtons() {//设置填入的数字
+		for (int i = 0; i < 9; i++) {
+			for (int j = 0; j < 9; j++) {
+				if (i == forcusX && j == forcusY&&itemTotal[i][j]==0)
+					buttonNum[i][j].setForeground(typecolor); //填入数字的颜色；
+				//else
+					//buttonNum[i][j].setForeground(Color.red);
+				//this.getFocusOwner().setBackground(Color.white);//填入数字的背景颜色；
+			}
+		}
+		 
+	}
+
+	public int[][] getNewItems() {// 得到经随机遮盖处理好的数独矩阵
+		int[][] result = SDgame.getCompleteItems();
+		for (int i = 0; i < easyLevel; i++) {
+			int r = (int) (Math.random() * 81);
+			if (r == 81)
+				r -= 1;
+			int indexi = r / 9;
+			int indexj = r % 9;
+			result[indexi][indexj] = 0;
+		}		
+		return result;
+	}
+
+	public static int[][] getCompleteItems() {// 得到填好的数独矩阵
+		int[][] temp = { { 7, 1, 6, 3, 5, 8, 4, 2, 9 },
+				{ 8, 4, 9, 2, 6, 7, 3, 1, 5 }, { 3, 5, 2, 4, 1, 9, 6, 8, 7 },
+				{ 5, 6, 7, 9, 4, 1, 8, 3, 2 }, { 4, 8, 1, 5, 3, 2, 7, 9, 6 },
+				{ 9, 2, 3, 8, 7, 6, 5, 4, 1 }, { 2, 9, 4, 6, 8, 5, 1, 7, 3 },
+				{ 1, 3, 5, 7, 2, 4, 9, 6, 8 }, { 6, 7, 8, 1, 9, 3, 2, 5, 4 } };
+		int[][] result = new int[9][9];
+		for (int i = 0; i < 9; i++) {
+			for (int j = 0; j < 9; j++) {
+				result[i][j] = temp[i][j];
+				
+			}
+		}
+		return result;
+	}	
+
+	public void showWinGame( ) {// 游戏过关后的处理函数
+		
+		if (starttime > 0) {
+			String message = new String("恭喜你，已过关！");			
+			message += "\n本关难度系数：";
+			Integer cureasyLevel = easyLevel;
+			message += cureasyLevel.toString();
+			message += "\n过关共用时间：";
+			overtime = System.currentTimeMillis();
+			Integer usetime = (int) (overtime - starttime);
+			usetime /= 1000;
+			String time;
+			if (usetime <= 60) {
+				time = usetime.toString();
+				time += " 秒";
+			} else if (usetime <= 3600) {
+				Integer minute = usetime / 60;
+				Integer second = usetime % 60;
+				time = minute.toString() + " 分 " + second.toString() + " 秒";
+			} else {
+				Integer hour = usetime / 3600;
+				Integer minute = usetime / 60;
+				Integer second = usetime % 60;
+				time = hour.toString() + " 小时 " + minute.toString() + " 分 "
+						+ second.toString() + " 秒";
+			}
+			message += time;
+			
+			new ImageApp(message);			
+			for (int i = 0; i < 9; i++) {
+				for (int j = 0; j < 9; j++) {
+					itemTotal[i][j] = 0;
+				}
+			}
+			showNumOnButtons(itemTotal);			
+			starttime = -1;
+			
+		}
+		
+	}
+	
+	
+
+	public static String getFileText(String filePath) {
+		File f = new File(filePath.trim());
+		if (!f.exists())
+			return null;
+		try {
+			int len = (int) f.length();
+			char[] acContent = new char[len];
+			FileReader fr = new FileReader(f);
+			int textLen = fr.read(acContent);
+			String strContent = String.valueOf(acContent, 0, textLen);
+			return strContent;
+		} catch (IOException ioe) {
+			return null;
+		}
+	}
+	
+
+}
+

game/Step.java

@@ -0,0 +1,13 @@
+package game;
+
+public class Step {
+	int x, y;
+	int newnum, orinum;
+
+	Step(int x, int y, int newnum, int orinum) {
+		this.x = x;
+		this.y = y;
+		this.newnum = newnum;
+		this.orinum = orinum;
+	}
+}

rule.txt

@@ -0,0 +1,5 @@
+数独游戏规则：
+小调皮需要在没有数字的格子内填入数字，
+只能填入1至9中的数字，并且使得每行每
+列和每个九宫格中没有重复的数字。
+