java实现2048游戏源代码

本文实例为大家分享了java实现2048游戏源代码，供大家参考，具体内容如下

一.主要功能：

1、游戏初始化：新建游戏4×4的16宫格画布，随机格子上生成2或者4两个数字
2、格子的移动：先判断能否移动，移动后判断能否合并，合并后改变格子颜色和数字
3、新格子的生成：移动一次，就在剩余的空格子中随机生成一个2或者4
4、判赢：16宫格中合并出了“2048”则为游戏胜利
5、判输：16宫格中没有剩余空格子且不能再向任何方向移动则为游戏失败

二.项目的主要结构：

在项目2018游戏中，有4个源文件，此外，还有3个.png和两个.wav格式的音乐文件。一个音乐是按键移动的声音，另外一个是碰撞后的消除的声音。然后游戏的最高分保存是在Recording源文件中，之后附上所需的图片文件和音乐文件：

来了来了.

三.代码

1、Game.java

package shixun;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class Game extends JFrame {
 private static final long serialVersionUID = 1L;
 public static void main(String[] args) {
 Game UI = new Game();
 UI.IntUI();

 }
 // 用于存放数据的数组,构成游戏4*4界面的数值
 private int Numbers[][] = new int[4][4] ;
 private void IntUI() {
 this.setTitle("2048小游戏");
 this.setLocation(450, 100);
 this.setSize(400, 500);
 this.setLayout(null);
 // 开始游戏按钮
 ImageIcon imgicon = new ImageIcon("res/start.png");
 JButton bt = new JButton(imgicon);
 bt.setFocusable(false);
 bt.setBorderPainted(false);
 bt.setFocusPainted(false);
 bt.setContentAreaFilled(false);
 bt.setBounds(5, 10, 120, 30);// 设置按钮的x，y坐标位置和宽度与高度
 this.add(bt);
 //后退一步按钮
 ImageIcon backicon = new ImageIcon("res/backicon.png");
 JButton back = new JButton(backicon);
 back.setFocusable(false);
 back.setBorderPainted(false);
 back.setFocusPainted(false);
 back.setContentAreaFilled(false);
 back.setBounds(270, 10, 120, 30);// 设置按钮的x，y坐标位置和宽度与高度
 this.add(back);
 // 关于按钮
 ImageIcon imgicon2 = new ImageIcon("res/about.png");
 JButton about = new JButton(imgicon2);
 about.setFocusable(false);
 about.setBorderPainted(false);
 about.setFocusPainted(false);
 about.setContentAreaFilled(false);
 about.setBounds(160, 10, 70, 30);
 this.add(about);
 // 分数显示
 JLabel lb = new JLabel("分数：0");
 lb.setBounds(40, 45, 120, 30);
 lb.setFont(new Font("幼圆", Font.CENTER_BASELINE, 18));
 lb.setForeground(new Color(0x000000));
 this.add(lb);
 //最高分数
 Recorder.getRecording();
 int maxscore = Recorder.getMaxscore_2048();
 JLabel M=new JLabel("最高分：0");
 M.setBounds(150,45,120,30);
 M.setFont(new Font("幼圆", Font.CENTER_BASELINE, 18));
 M.setForeground(new Color(0x000000));
 this.add(M);
 //静音
 JCheckBox isSoundBox=new JCheckBox("静音");
 isSoundBox.setBounds(290, 45, 120, 30);
 isSoundBox.setFont(new Font("幼圆", Font.CENTER_BASELINE, 18));
 isSoundBox.setFocusable(false);
 isSoundBox.setBorderPainted(false);
 isSoundBox.setFocusPainted(false);
 isSoundBox.setContentAreaFilled(false);
 this.add(isSoundBox);
 this.setDefaultCloseOperation(3);
 this.setResizable(false);
 this.setVisible(true);// 显示界面
 // 创建事件处理类
 MyListener cl = new MyListener(this,Numbers,lb,M, bt, about,back,isSoundBox);
 bt.addActionListener(cl);
 about.addActionListener(cl);
 back.addActionListener(cl);
 isSoundBox.addActionListener(cl);
 this.addKeyListener(cl);
 }
// 重写窗体
 @Override
public void paint(Graphics g) {
 super.paint(g);
 g.setColor(new Color(0xBBADA0));
 g.fillRoundRect(15, 110, 370, 370, 15, 15);// 大矩形框
 g.setColor(new Color(0xCDC1B4));
 for (int i = 0; i < 4; i++) {
 for (int j = 0; j < 4; j++) {
 g.fillRoundRect(25 + i * 90, 120 + j * 90, 80, 80, 15, 15);// 小矩形框
 }
 }
 // 调整数字的位置并上色
 for (int i = 0; i < 4; i++) {
 for (int j = 0; j < 4; j++) {
 if (Numbers[j][i] != 0) {
 int FontSize = 30;
 int MoveX = 0, MoveY = 0;
 switch (Numbers[j][i]) {
 case 2:
 g.setColor(new Color(0xeee4da));
 FontSize = 30;
 MoveX = 0;
 MoveY = 0;
 break;
 case 4:
 g.setColor(new Color(0xede0c8));
 FontSize = 30;
 MoveX = 0;
 MoveY = 0;
 break;
 case 8:
 g.setColor(new Color(0xf2b179));
 FontSize = 30;
 MoveX = 0;
 MoveY = 0;
 break;
 case 16:
 g.setColor(new Color(0xf59563));
 FontSize = 29;
 MoveX = -5;
 MoveY = 0;
 break;
 case 32:
 g.setColor(new Color(0xf67c5f));
 FontSize = 29;
 MoveX = -5;
 MoveY = 0;
 break;
 case 64:
 g.setColor(new Color(0xf65e3b));
 FontSize = 29;
 MoveX = -5;
 MoveY = 0;
 break;
 case 128:
 g.setColor(new Color(0xedcf72));
 FontSize = 28;
 MoveX = -10;
 MoveY = 0;
 break;
 case 256:
 g.setColor(new Color(0xedcc61));
 FontSize = 28;
 MoveX = -10;
 MoveY = 0;
 break;
 case 512:
 g.setColor(new Color(0xedc850));
 FontSize = 28;
 MoveX = -10;
 MoveY = 0;
 break;
 case 1024:
 g.setColor(new Color(0xedc53f));
 FontSize = 27;
 MoveX = -15;
 MoveY = 0;
 break;
 case 2048:
 g.setColor(new Color(0xedc22e));
 FontSize = 27;
 MoveX = -15;
 MoveY = 0;
 break;
 default:
 g.setColor(new Color(0x000000));
 break;
 }
 g.fillRoundRect(25 + i * 90, 120 + j * 90, 80, 80, 15, 15);// 小矩形框上色
 g.setColor(new Color(0x000000));
 g.setFont(new Font("Kristen ITC", Font.PLAIN, FontSize));
 g.drawString(Numbers[j][i] + "", 25 + i * 90 + 30 + MoveX,
 120 + j * 90 + 50 + MoveY);
 }
 }
 }
 }
}

2、MyListener.java

package shixun;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.util.Arrays;
import java.util.Random;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
public class MyListener extends KeyAdapter implements ActionListener {
/**
 * KevinWu
 */
 private Game UI;// 界面对象
 private int Numbers[][];// 存放数据的数组
 private Random rand = new Random();
 private int BackUp[][]= new int[4][4];//用于备份数组，供回退时使用
 private int BackUp2[][]= new int[4][4];//用于备份数组，供起死回生时使用
 public JLabel lb;
 public JLabel M;
 int score = 0;
 int maxscore=Recorder.getMaxscore_2048();
 int tempscore,tempscore2;//记录回退isWin的分数值
 public JButton bt,about,back;
 public JCheckBox isSoundBox;
 private boolean isWin=false,relive=false,hasBack=false,isSound=true;
 public MyListener(Game UI, int Numbers[][], JLabel lb,JLabel M ,JButton bt,JButton about,JButton back,JCheckBox isSoundBox) {
 this.UI = UI;
 this.Numbers = Numbers;
 this.lb = lb;
 this.bt=bt;
 this.about=about;
 this.back=back;
 this.isSoundBox=isSoundBox;
 this.M=M;
 }
 @Override
 public void actionPerformed(ActionEvent e) {
 // TODO Auto-generated method stub
 if(e.getSource() ==bt ){
 isWin=false;
 for (int i = 0; i < 4; i++)
 for (int j = 0; j < 4; j++)
 Numbers[i][j] = 0;
score = 0;// 保证每次重置游戏都是0分开始
 lb.setText("分数：" + score);
 M.setText("最高分:"+maxscore);
 int r1 = rand.nextInt(4);
 int r2 = rand.nextInt(4);
 int c1 = rand.nextInt(4);
 int c2 = rand.nextInt(4);
 while (r1 == r2 && c1 == c2) {
 r2 = rand.nextInt(4);
 c2 = rand.nextInt(4);
 }
 // 生成数字（2或者4）
 int value1 = rand.nextInt(2) * 2 + 2;
 int value2 = rand.nextInt(2) * 2 + 2;
 // 把数字存进对应的位置
 Numbers[r1][c1] = value1;
 Numbers[r2][c2] = value2;
 UI.paint(UI.getGraphics());
 }
 else if(e.getSource()==about){
 JOptionPane.showMessageDialog(UI, "游戏规则：\n"
 + "开始时棋盘内随机出现两个数字，出现的数字仅可能为2或4\n"
 + "玩家可以选择上下左右四个方向，若棋盘内的数字出现位移或合并，视为有效移动\n"
 + "玩家选择的方向上若有相同的数字则合并，每次有效移动可以同时合并，但不可以连续合并\n"
 + "合并所得的所有新生成数字想加即为该步的有效得分\n"
 + "玩家选择的方向行或列前方有空格则出现位移\n"
 + "每有效移动一步，棋盘的空位(无数字处)随机出现一个数字(依然可能为2或4)\n"
 + "棋盘被数字填满，无法进行有效移动，判负，游戏结束\n"
 + "棋盘上出现2048，判胜，游戏结束。\n"
 );
 }
 else if(e.getSource()==back&&hasBack==false){
 hasBack=true;
 if(relive==false){
 score=tempscore;
 lb.setText("分数：" + score);
 for(int i=0;i<BackUp.length;i++){
 Numbers[i]=Arrays.copyOf(BackUp[i], BackUp[i].length);
 }
 }
 else{
 score=tempscore2;
 lb.setText("分数：" + score);
 for(int i=0;i<BackUp2.length;i++){
 Numbers[i]=Arrays.copyOf(BackUp2[i], BackUp2[i].length);
 }
 relive=false;
 }
 UI.paint(UI.getGraphics());
 }
 else if(e.getSource().equals(isSoundBox)){
 if (isSoundBox.isSelected())
 isSound=false;
 else
 isSound=true;
 }
 }
 // 键盘监听
 public void keyPressed(KeyEvent event) {
int Counter = 0;// 计算器，判断是否移动了
 int NumCounter = 0;// 用于统计整个大方框中数字的个数，判断是否已满
 int NumNearCounter = 0;// 用于统计相邻格子数字相同的个数
 /*
 * 方向键键值：左：37上：38右：39下：40
 */
 hasBack = false;
 if (BackUp != null || BackUp.length != 0) {
 tempscore2 = tempscore;// 先把分数备份好
 // 下面的for循环调用java.util.Arrays.copyOf()方法复制数组，实现备份
 for (int i = 0; i < BackUp.length; i++) {
 BackUp2[i] = Arrays.copyOf(BackUp[i], BackUp[i].length);
 }
 }
 tempscore = score;// 先把分数备份好
 // 下面的for循环调用java.util.Arrays.copyOf()方法复制数组，实现备份
 for (int i = 0; i < Numbers.length; i++) {
 BackUp[i] = Arrays.copyOf(Numbers[i], Numbers[i].length);
 }
 if (isWin == false) {
 switch (event.getKeyCode()) {
 case 37:
 // 向左移动
 if (isSound == true)
 new PlaySound("move.wav").start();
 for (int h = 0; h < 4; h++)
 for (int l = 0; l < 4; l++)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = l - 1;
 while (pre >= 0 && Numbers[h][pre] == 0) {
 Numbers[h][pre] = temp;
 Numbers[h][pre + 1] = 0;
 pre--;
 Counter++;
 }
 }
 for (int h = 0; h < 4; h++)
 for (int l = 0; l < 4; l++)
 if (l + 1 < 4
 && (Numbers[h][l] == Numbers[h][l + 1])
 && (Numbers[h][l] != 0 || Numbers[h][l + 1] != 0)) {
 if (isSound == true)
 new PlaySound("merge.wav").start();
 Numbers[h][l] = Numbers[h][l] + Numbers[h][l + 1];
 Numbers[h][l + 1] = 0;
 Counter++;
 score += Numbers[h][l];
 if (Numbers[h][l] == 2048) {
 isWin = true;
 }
 }
for (int h = 0; h < 4; h++)
 for (int l = 0; l < 4; l++)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = l - 1;
 while (pre >= 0 && Numbers[h][pre] == 0) {
 Numbers[h][pre] = temp;
 Numbers[h][pre + 1] = 0;
 pre--;
 Counter++;
 }
 }
 break;
 case 39:// 向右移动
 if (isSound == true)
 new PlaySound("move.wav").start();
 for (int h = 3; h >= 0; h--)
 for (int l = 3; l >= 0; l--)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = l + 1;
 while (pre <= 3 && Numbers[h][pre] == 0) {
 Numbers[h][pre] = temp;
 Numbers[h][pre - 1] = 0;
 pre++;
 Counter++;
 }
 }

 for (int h = 3; h >= 0; h--)
 for (int l = 3; l >= 0; l--)
 if (l + 1 < 4
 && (Numbers[h][l] == Numbers[h][l + 1])
 && (Numbers[h][l] != 0 || Numbers[h][l + 1] != 0)) {
 if (isSound == true)
 new PlaySound("merge.wav").start();
 Numbers[h][l + 1] = Numbers[h][l]
 + Numbers[h][l + 1];
 Numbers[h][l] = 0;
 Counter++;
 score += Numbers[h][l + 1];
 if (Numbers[h][l + 1] == 2048) {
 isWin = true;
 }
 }
 for (int h = 3; h >= 0; h--)
 for (int l = 3; l >= 0; l--)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = l + 1;
 while (pre <= 3 && Numbers[h][pre] == 0) {
 Numbers[h][pre] = temp;
 Numbers[h][pre - 1] = 0;
 pre++;
 Counter++;
 }
 }
 break;
 case 38:
 //向上移动
 if (isSound == true)
 new PlaySound("move.wav").start();
 for (int l = 0; l < 4; l++)
 for (int h = 0; h < 4; h++)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = h - 1;
 while (pre >= 0 && Numbers[pre][l] == 0) {
 Numbers[pre][l] = temp;
 Numbers[pre + 1][l] = 0;
 pre--;
 Counter++;
 }
 }
 for (int l = 0; l < 4; l++)
 for (int h = 0; h < 4; h++)
 if (h + 1 < 4
 && (Numbers[h][l] == Numbers[h + 1][l])
 && (Numbers[h][l] != 0 || Numbers[h + 1][l] != 0)) {
 if (isSound == true)
 new PlaySound("merge.wav").start();
 Numbers[h][l] = Numbers[h][l] + Numbers[h + 1][l];
 Numbers[h + 1][l] = 0;
 Counter++;
 score += Numbers[h][l];
 if (Numbers[h][l] == 2048) {
 isWin = true;
 }
 }
 for (int l = 0; l < 4; l++)
 for (int h = 0; h < 4; h++)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = h - 1;
 while (pre >= 0 && Numbers[pre][l] == 0) {
 Numbers[pre][l] = temp;
 Numbers[pre + 1][l] = 0;
 pre--;
 Counter++;
 }
 }
 break;
 case 40:
 // 向下移动
 if (isSound == true)
 new PlaySound("move.wav").start();
 for (int l = 3; l >= 0; l--)
 for (int h = 3; h >= 0; h--)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = h + 1;
 while (pre <= 3 && Numbers[pre][l] == 0) {
 Numbers[pre][l] = temp;
 Numbers[pre - 1][l] = 0;
 pre++;
 Counter++;
 }
 }
 for (int l = 3; l >= 0; l--)
 for (int h = 3; h >= 0; h--)
 if (h + 1 < 4
 && (Numbers[h][l] == Numbers[h + 1][l])
 && (Numbers[h][l] != 0 || Numbers[h + 1][l] != 0)) {
 if (isSound == true)
 new PlaySound("merge.wav").start();
 Numbers[h + 1][l] = Numbers[h][l]
 + Numbers[h + 1][l];
 Numbers[h][l] = 0;
 Counter++;
 score += Numbers[h + 1][l];
 if (Numbers[h + 1][l] == 2048) {
 isWin = true;
 }
 }
 for (int l = 0; l < 4; l++)
 for (int h = 0; h < 4; h++)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = h - 1;
 while (pre >= 0 && Numbers[pre][l] == 0) {
 Numbers[pre][l] = temp;
 Numbers[pre + 1][l] = 0;
 pre--;
 Counter++;
 }
 }
 break;
case 40:
 // 向下移动
 if (isSound == true)
 new PlaySound("move.wav").start();
 for (int l = 3; l >= 0; l--)
 for (int h = 3; h >= 0; h--)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = h + 1;
 while (pre <= 3 && Numbers[pre][l] == 0) {
 Numbers[pre][l] = temp;
 Numbers[pre - 1][l] = 0;
 pre++;
 Counter++;
 }
 }
 for (int l = 3; l >= 0; l--)
 for (int h = 3; h >= 0; h--)
 if (h + 1 < 4
 && (Numbers[h][l] == Numbers[h + 1][l])
 && (Numbers[h][l] != 0 || Numbers[h + 1][l] != 0)) {
 if (isSound == true)
 new PlaySound("merge.wav").start();
 Numbers[h + 1][l] = Numbers[h][l]
 + Numbers[h + 1][l];
 Numbers[h][l] = 0;
 Counter++;
 score += Numbers[h + 1][l];
 if (Numbers[h + 1][l] == 2048) {
 isWin = true;
 }
 }
 for (int l = 3; l >= 0; l--)
 for (int h = 3; h >= 0; h--)
 if (Numbers[h][l] != 0) {
 int temp = Numbers[h][l];
 int pre = h + 1;
 while (pre <= 3 && Numbers[pre][l] == 0) {
 Numbers[pre][l] = temp;
 Numbers[pre - 1][l] = 0;
 pre++;
 Counter++;
 }
 }
 break;
default:break;
}
 if(maxscore<=score) {
 maxscore=score;
 Recorder.setMaxscore(maxscore);
 Recorder.keepRecording();

 }
 for (int i = 0; i < 3; i++) {
 for (int j = 0; j < 3; j++) {
 if (Numbers[i][j] == Numbers[i][j + 1]
 && Numbers[i][j] != 0) {
 NumNearCounter++;
 }
 if (Numbers[i][j] == Numbers[i + 1][j]
 && Numbers[i][j] != 0) {
 NumNearCounter++;
 }
 if (Numbers[3][j] == Numbers[3][j + 1]
 && Numbers[3][j] != 0) {
 NumNearCounter++;
 }
 if (Numbers[i][3] == Numbers[i + 1][3]
 && Numbers[i][3] != 0) {
 NumNearCounter++;
 }
 }
 }
 for (int i = 0; i < 4; i++) {
 for (int j = 0; j < 4; j++) {
 if (Numbers[i][j] != 0) {
 NumCounter++;
 }
 }
 }
 if (Counter > 0) {
 lb.setText("分数：" + score);
 M.setText("最高分："+maxscore);
 int r1 = rand.nextInt(4);
 int c1 = rand.nextInt(4);
 while (Numbers[r1][c1] != 0) {
 r1 = rand.nextInt(4);
 c1 = rand.nextInt(4);
 }
 int value1 = rand.nextInt(2) * 2 + 2;
 Numbers[r1][c1] = value1;
 }
if (isWin == true){
 UI.paint(UI.getGraphics());
 JOptionPane.showMessageDialog(UI, "恭喜你赢了!\n您的最终得分为：" + score);
 }
 if (NumCounter == 16 && NumNearCounter == 0) {
 relive = true;
 JOptionPane.showMessageDialog(UI, "没地方可以合并咯!!"
 + "\n很遗憾，您输了~>_<~" + "\n悄悄告诉你，游戏有起死回生功能哦，不信你“退一步”试试？"
 + "\n说不定能扭转乾坤捏 （^_~）");
 }
 UI.paint(UI.getGraphics());
 }
 }
 }

3、PlaySound.java

package shixun;
import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;
//播放声音的线程
public class PlaySound extends Thread {
 private String filename;
 public PlaySound(String wavfile) {
 filename = "res/" + wavfile;
 }
 public void run() {
 File soundFile = new File(filename);
 AudioInputStream audioInputStream = null;
 try {
 audioInputStream = AudioSystem.getAudioInputStream(soundFile);
 } catch (Exception e1) {
 e1.printStackTrace();
 return;
 }
 AudioFormat format = audioInputStream.getFormat();
 SourceDataLine auline = null;
 DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);
 try {
 auline = (SourceDataLine) AudioSystem.getLine(info);
 auline.open(format);
 } catch (Exception e) {
 e.printStackTrace();
 return;
 }
 auline.start();
 int nBytesRead = 0;
 // 这是缓冲
 byte[] abData = new byte[512];
 try {
 while (nBytesRead != -1) {
 nBytesRead = audioInputStream.read(abData, 0, abData.length);
 if (nBytesRead >= 0)
 auline.write(abData, 0, nBytesRead);
 }
 } catch (IOException e) {
 e.printStackTrace();
 return;
 } finally {
 auline.drain();
 auline.close();
 }
 }
}

4、Recorder.java

package shixun;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
public class Recorder {
 private static int maxscore_2048=0;
 public static int getMaxscore_2048() {
 // TODO Auto-generated method stub
 return maxscore_2048;
 }
 public static void setMaxscore(int maxscore_2048) {
 // TODO Auto-generated method stub
 Recorder.maxscore_2048=maxscore_2048;
 }
 private static FileReader fr=null;
private static BufferedReader br=null;
private static FileWriter fw=null;
private static BufferedWriter bw=null;
//从文件中读取，记录
public static void getRecording()
{
 boolean flag =false;//判断文件是否新建
 try {
 File f=new File("src/myRecording.txt");
 if(f.exists())
 {
 fr=new FileReader(f);
 br=new BufferedReader(fr);
 String n=br.readLine();
 maxscore_2048=Integer.parseInt(n);
 }
 else {
 flag=f.createNewFile();
 }
 }
 catch(Exception e) {
 e.printStackTrace();
 }
 finally {
 try {
 if(!flag) {
 br.close();
 fr.close();
 }
 }catch(Exception e2) {
 e2.printStackTrace();
 }
 }
 }
 //保存最高分记录
 public static void keepRecording()
 {
 try {
 File f=new File("src/myRecording.txt");
 fw=new FileWriter(f);
 bw=new BufferedWriter(fw);
 bw.write(maxscore_2048+"\r\n");
 }catch(IOException e) {
 e.printStackTrace();
 }
 finally {
 try {
 bw.close();
 fw.close();
 }
 catch(IOException e) {
 e.printStackTrace();
 }
 }
 }
 } 

四.游戏截图

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