实验11.相关知识点GUI相关的类组件的属性及功能事件源、监视器、处理事件的接口2.实验目的学习掌握事件处理3.实验要求按以下需求可扩充设计并完成一个能运行的且界面美观的小软件。提交可运行软件程序主要针对小学生的算术计算。可以自定义计算的难度此项可根据功能进行扩展随机获取不一样的题目能通过按键触发确定填写输入的答案是否正确。计算满足 - * /(可扩展操作数可以是整数、小数、分数等等可扩展具体代码ArithmeticTrainer.javapackage sb; import javax.swing.*; import javax.swing.BorderFactory; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Random; public class ArithmeticTrainer extends JFrame { // 界面组件 private JLabel lblQuestion; private JTextField txtAnswer; private JButton btnCheck, btnNext; private JLabel lblTip; private JComboBoxString cbLevel; private Random random new Random(); private int num1, num2, op; private String operator; private int maxNum; // 难度最大值 public ArithmeticTrainer() { // 窗口基础设置 setTitle(小学生算术练习器); setSize(420, 280); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLocationRelativeTo(null); setLayout(new GridLayout(6, 1, 10, 10)); // 1.难度选择行 JPanel panelLevel new JPanel(); panelLevel.add(new JLabel(选择难度)); String[] levels {简单(0-10), 中等(0-50), 困难(0-100)}; cbLevel new JComboBox(levels); panelLevel.add(cbLevel); add(panelLevel); // 2.题目显示 lblQuestion new JLabel(题目, SwingConstants.CENTER); lblQuestion.setFont(new Font(黑体, Font.BOLD, 24)); add(lblQuestion); // 3.答案输入框 JPanel panelInput new JPanel(); panelInput.add(new JLabel(你的答案)); txtAnswer new JTextField(10); txtAnswer.setFont(new Font(宋体, Font.PLAIN, 18)); panelInput.add(txtAnswer); add(panelInput); // 4.按钮区域 JPanel panelBtn new JPanel(); btnCheck new JButton(判断答案); btnNext new JButton(下一题); panelBtn.add(btnCheck); panelBtn.add(btnNext); add(panelBtn); // 5.提示文字 lblTip new JLabel(请选择难度后点击下一题开始练习, SwingConstants.CENTER); lblTip.setFont(new Font(宋体, Font.PLAIN, 16)); add(lblTip); // 绑定事件 bindEvent(); nextQuestion(); } private void bindEvent() { // 下一题 btnNext.addActionListener(e - { nextQuestion(); txtAnswer.setText(); lblTip.setText(); }); // 校验答案 btnCheck.addActionListener(e - checkAnswer()); } private void nextQuestion() { String level (String) cbLevel.getSelectedItem(); if (level.contains(10)) maxNum 10; else if (level.contains(50)) maxNum 50; else maxNum 100; num1 random.nextInt(maxNum 1); num2 random.nextInt(maxNum 1); op random.nextInt(4); switch (op) { case 0: operator ; break; case 1: operator -; if (num1 num2) { int temp num1; num1 num2; num2 temp; } break; case 2: operator *; break; case 3: operator /; if (num2 0) num2 1; num1 num2 * random.nextInt(maxNum / 2 1); break; } lblQuestion.setText(num1 operator num2 ?); } private void checkAnswer() { String input txtAnswer.getText().trim(); if (input.isEmpty()) { lblTip.setText(请输入答案); lblTip.setForeground(Color.RED); return; } int userAns; try { userAns Integer.parseInt(input); } catch (NumberFormatException e) { lblTip.setText(输入必须是整数); lblTip.setForeground(Color.RED); return; } int rightAns calculateResult(); if (userAns rightAns) { lblTip.setText(回答正确太棒了); lblTip.setForeground(new Color(0, 150, 0)); } else { lblTip.setText(回答错误正确答案 rightAns); lblTip.setForeground(Color.RED); } } private int calculateResult() { switch (op) { case 0: return num1 num2; case 1: return num1 - num2; case 2: return num1 * num2; case 3: return num1 / num2; default: return 0; } } public static void main(String[] args) { SwingUtilities.invokeLater(() - new ArithmeticTrainer().setVisible(true)); } }运行截图如下如图所示这串代码实现了小学生算数练习器的功能实验2选做可AI终端**扫雷、射击。。。游戏良好的界面实现可调节难度计时与计步功能保存/读取游戏进度。。。。可扩展扫雷游戏package sb; import javax.swing.*; import java.awt.*; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.*; import java.util.Random; public class MineSweeperGUI extends JFrame { // 基础配置 private int row, col, mineCount; private int[][] mineMap; private boolean[][] open; private boolean[][] flag; private JButton[][] buttons; private JLabel lblTime, lblStep; private long startTime; private int step; private final String savePath mine_save.txt; private JPanel panelBoard; private Thread timerThread; // 计时线程单独管理避免多线程叠加 public MineSweeperGUI() { setTitle(图形扫雷游戏); setDefaultCloseOperation(EXIT_ON_CLOSE); setLayout(new BorderLayout()); // 顶部菜单栏 JPanel topPanel new JPanel(); JButton btnEasy new JButton(简单5*5); JButton btnMid new JButton(中等8*8); JButton btnHard new JButton(困难10*10); JButton btnSave new JButton(保存进度); JButton btnLoad new JButton(读取存档); lblTime new JLabel(时间0秒); lblStep new JLabel(步数0); topPanel.add(btnEasy); topPanel.add(btnMid); topPanel.add(btnHard); topPanel.add(btnSave); topPanel.add(btnLoad); topPanel.add(lblTime); topPanel.add(lblStep); add(topPanel, BorderLayout.NORTH); // 按钮事件-切换难度 btnEasy.addActionListener(e - initGame(5, 5, 5)); btnMid.addActionListener(e - initGame(8, 8, 10)); btnHard.addActionListener(e - initGame(10, 10, 20)); btnSave.addActionListener(e - saveGame()); btnLoad.addActionListener(e - loadGame()); // 默认开局简单难度 initGame(5, 5, 5); setSize(650, 550); setLocationRelativeTo(null); } // 初始化棋盘 private void initGame(int r, int c, int m) { row r; col c; mineCount m; step 0; startTime System.currentTimeMillis(); mineMap new int[row][col]; open new boolean[row][col]; flag new boolean[row][col]; buttons new JButton[row][col]; // 重置棋盘面板 if (panelBoard ! null) remove(panelBoard); panelBoard new JPanel(new GridLayout(row, col, 2, 2)); panelBoard.setBackground(Color.GRAY); // 生成地雷 Random rand new Random(); int addMine 0; while (addMine mineCount) { int x rand.nextInt(row); int y rand.nextInt(col); if (mineMap[x][y] ! -1) { mineMap[x][y] -1; addMine; } } // 计算周围地雷数 for (int i 0; i row; i) { for (int j 0; j col; j) { if (mineMap[i][j] -1) continue; int cnt 0; for (int dx -1; dx 1; dx) for (int dy -1; dy 1; dy) { int ni i dx, nj j dy; if (ni 0 ni row nj 0 nj col mineMap[ni][nj] -1) cnt; } mineMap[i][j] cnt; } } // 创建按钮鼠标监听 for (int i 0; i row; i) { for (int j 0; j col; j) { JButton btn new JButton(); btn.setPreferredSize(new Dimension(40, 40)); btn.setFont(new Font(黑体, Font.BOLD, 16)); int x i, y j; btn.addMouseListener(new MouseAdapter() { Override public void mouseClicked(MouseEvent e) { if (SwingUtilities.isLeftMouseButton(e)) { openCell(x, y); } else if (SwingUtilities.isRightMouseButton(e)) { markFlag(x, y); } } }); buttons[i][j] btn; panelBoard.add(btn); } } add(panelBoard, BorderLayout.CENTER); updateTimeLabel(); lblStep.setText(步数0); revalidate(); repaint(); // 重启计时线程防止多线程叠加 if (timerThread ! null timerThread.isAlive()) { timerThread.interrupt(); } timerThread new Thread(() - { while (!Thread.currentThread().isInterrupted()) { try { Thread.sleep(1000); updateTimeLabel(); } catch (InterruptedException ex) { break; } } }); timerThread.setDaemon(true); timerThread.start(); } // 左键点开格子按钮直接隐藏方块消失 private void openCell(int x, int y) { if (open[x][y] || flag[x][y]) return; step; lblStep.setText(步数 step); open[x][y] true; JButton btn buttons[x][y]; // 踩到地雷游戏结束 if (mineMap[x][y] -1) { btn.setText(*); btn.setBackground(Color.RED); showAllMine(); JOptionPane.showMessageDialog(this, 踩雷游戏结束); return; } // 核心优化点击后按钮直接隐藏方块消失 btn.setVisible(false); int num mineMap[x][y]; if (num 0) { // 数字格子不隐藏显示数字 btn.setVisible(true); btn.setText(num ); btn.setBackground(Color.LIGHT_GRAY); } else { // 空白格子隐藏并递归展开周围 for (int dx -1; dx 1; dx) for (int dy -1; dy 1; dy) { int nx x dx, ny y dy; if (nx 0 nx row ny 0 ny col) openCell(nx, ny); } } checkWin(); } // 右键插旗/取消 private void markFlag(int x, int y) { if (open[x][y]) return; flag[x][y] !flag[x][y]; buttons[x][y].setText(flag[x][y] ? : ); } // 全部地雷显示失败 private void showAllMine() { for (int i 0; i row; i) for (int j 0; j col; j) { if (mineMap[i][j] -1) { JButton btn buttons[i][j]; btn.setVisible(true); btn.setText(*); btn.setBackground(Color.RED); } } } // 判断胜利 private void checkWin() { int close 0; for (int i 0; i row; i) for (int j 0; j col; j) if (!open[i][j]) close; if (close mineCount) { long t (System.currentTimeMillis() - startTime) / 1000; JOptionPane.showMessageDialog(this, 恭喜通关总步数 step 用时 t 秒); } } // 更新时间标签 private void updateTimeLabel() { long sec (System.currentTimeMillis() - startTime) / 1000; lblTime.setText(时间 sec 秒); } // 保存游戏 private void saveGame() { try (BufferedWriter bw new BufferedWriter(new FileWriter(savePath))) { bw.write(row , col , mineCount , step , startTime); bw.newLine(); // 地图 for (int i 0; i row; i) { for (int j 0; j col; j) bw.write(mineMap[i][j] ); bw.newLine(); } // 打开状态 for (int i 0; i row; i) { for (int j 0; j col; j) bw.write(open[i][j] ? 1 : 0 ); bw.newLine(); } // 旗子 for (int i 0; i row; i) { for (int j 0; j col; j) bw.write(flag[i][j] ? 1 : 0 ); bw.newLine(); } JOptionPane.showMessageDialog(this, 存档成功); } catch (IOException e) { JOptionPane.showMessageDialog(this, 存档失败); } } // 读取存档 private void loadGame() { File file new File(savePath); if (!file.exists()) { JOptionPane.showMessageDialog(this, 无存档文件); return; } try (BufferedReader br new BufferedReader(new FileReader(file))) { String[] head br.readLine().split(,); int r Integer.parseInt(head[0]); int c Integer.parseInt(head[1]); int m Integer.parseInt(head[2]); int s Integer.parseInt(head[3]); long st Long.parseLong(head[4]); // 重建界面 initGame(r, c, m); step s; startTime st; lblStep.setText(步数 step); // 读取地图 for (int i 0; i r; i) { String[] arr br.readLine().split( ); for (int j 0; j c; j) mineMap[i][j] Integer.parseInt(arr[j]); } // 读取打开状态 for (int i 0; i r; i) { String[] arr br.readLine().split( ); for (int j 0; j c; j) open[i][j] 1.equals(arr[j]); } // 读取旗子 for (int i 0; i r; i) { String[] arr br.readLine().split( ); for (int j 0; j col; j) flag[i][j] 1.equals(arr[j]); } // 刷新界面显示存档状态 refreshBoard(); JOptionPane.showMessageDialog(this, 读取存档成功); } catch (Exception e) { JOptionPane.showMessageDialog(this, 读取失败); } } // 根据存档刷新棋盘显示 private void refreshBoard() { for (int i 0; i row; i) { for (int j 0; j col; j) { JButton btn buttons[i][j]; btn.setText(); btn.setBackground(null); btn.setVisible(true); if (flag[i][j]) btn.setText(); if (open[i][j]) { if (mineMap[i][j] -1) { btn.setText(*); btn.setBackground(Color.RED); } else if (mineMap[i][j] 0) { btn.setText(mineMap[i][j] ); btn.setBackground(Color.LIGHT_GRAY); } else { // 空白格子隐藏方块消失 btn.setVisible(false); } } } } } public static void main(String[] args) { SwingUtilities.invokeLater(() - new MineSweeperGUI().setVisible(true)); } }运行截图如下射击游戏代码package sb; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.File; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.ArrayList; import java.util.Random; public class TopDownShooter2D { private static final int WIN_WIDTH 800; private static final int WIN_HEIGHT 650; private static final int TILE_SIZE 40; // 地图 1墙体 0空地 private final int[][] mapData { {1,1,1,1,1,1,1,1,1,1}, {1,0,0,0,1,0,0,0,0,1}, {1,0,1,0,1,0,1,1,0,1}, {1,0,1,0,0,0,0,1,0,1}, {1,0,1,1,1,1,0,1,0,1}, {1,0,0,0,0,0,0,0,0,1}, {1,0,1,1,0,1,1,1,0,1}, {1,0,0,0,0,0,0,0,0,1}, {1,1,1,1,1,1,1,1,1,1} }; private final int mapRow mapData.length; private final int mapCol mapData[0].length; // 玩家参数 private double px 60, py 60; private double pAngle 0; private final double moveSpeed 3; // 按键状态 private boolean keyW, keyS, keyA, keyD; // 游戏数据 private ArrayListEnemy enemyList new ArrayList(); private int bullet 30; private int score 0; private long gameStart; private int stepCount 0; private final String saveFile shooter_save.txt; // UI private JFrame frame; private GamePanel gamePanel; private JLabel lblTime, lblStep, lblBullet, lblScore; private Timer gameTimer; // 敌人类 static class Enemy { double x, y; boolean alive true; Enemy(double x, double y) { this.x x; this.y y; } } // 画布绘制面板 private class GamePanel extends JPanel { public GamePanel() { setPreferredSize(new Dimension(mapCol * TILE_SIZE, mapRow * TILE_SIZE)); setBackground(Color.BLACK); // 删掉报错的 setInputContext(null) bindGlobalKeys(); } // 全局按键绑定 private void bindGlobalKeys() { InputMap im getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW); ActionMap am getActionMap(); // W键 im.put(KeyStroke.getKeyStroke(W), pressW); am.put(pressW, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyW true; } }); im.put(KeyStroke.getKeyStroke(released W), releaseW); am.put(releaseW, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyW false; } }); // S键 im.put(KeyStroke.getKeyStroke(S), pressS); am.put(pressS, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyS true; } }); im.put(KeyStroke.getKeyStroke(released S), releaseS); am.put(releaseS, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyS false; } }); // A键 im.put(KeyStroke.getKeyStroke(A), pressA); am.put(pressA, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyA true; } }); im.put(KeyStroke.getKeyStroke(released A), releaseA); am.put(releaseA, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyA false; } }); // D键 im.put(KeyStroke.getKeyStroke(D), pressD); am.put(pressD, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyD true; } }); im.put(KeyStroke.getKeyStroke(released D), releaseD); am.put(releaseD, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyD false; } }); // R换弹 im.put(KeyStroke.getKeyStroke(R), pressR); am.put(pressR, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { bullet 30; updateHUD(); } }); } Override protected void paintComponent(Graphics g) { super.paintComponent(g); renderGame(g); } } public TopDownShooter2D() { frame new JFrame(2D俯视射击游戏); frame.setSize(WIN_WIDTH, WIN_HEIGHT); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocationRelativeTo(null); frame.setLayout(new BorderLayout()); // 顶部信息栏 JPanel topBar new JPanel(); JButton easyBtn new JButton(简单); JButton midBtn new JButton(中等); JButton hardBtn new JButton(困难); JButton saveBtn new JButton(保存进度); JButton loadBtn new JButton(读取存档); lblTime new JLabel(时间0s); lblStep new JLabel(步数0); lblBullet new JLabel(子弹30); lblScore new JLabel(得分0); topBar.add(easyBtn); topBar.add(midBtn); topBar.add(hardBtn); topBar.add(saveBtn); topBar.add(loadBtn); topBar.add(lblTime); topBar.add(lblStep); topBar.add(lblBullet); topBar.add(lblScore); frame.add(topBar, BorderLayout.NORTH); // 游戏画布 gamePanel new GamePanel(); frame.add(gamePanel, BorderLayout.CENTER); // 按钮事件 easyBtn.addActionListener(e - startGame(3)); midBtn.addActionListener(e - startGame(6)); hardBtn.addActionListener(e - startGame(10)); saveBtn.addActionListener(e - saveGameData()); loadBtn.addActionListener(e - loadGameData()); // 鼠标瞄准、射击 gamePanel.addMouseMotionListener(new MouseAdapter() { Override public void mouseMoved(MouseEvent e) { pAngle Math.atan2(e.getY() - py, e.getX() - px); } }); gamePanel.addMouseListener(new MouseAdapter() { Override public void mousePressed(MouseEvent e) { gamePanel.requestFocusInWindow(); if (SwingUtilities.isLeftMouseButton(e)) { shoot(); } } }); // 游戏刷新定时器 gameTimer new Timer(16, e - { updatePlayer(); updateHUD(); gamePanel.repaint(); }); gameTimer.start(); startGame(3); frame.setVisible(true); // 窗口打开自动获取焦点 SwingUtilities.invokeLater(gamePanel::requestFocusInWindow); } // 初始化游戏、生成敌人 private void startGame(int enemyNum) { enemyList.clear(); Random rand new Random(); for (int i 0; i enemyNum; i) { int r, c; do { r rand.nextInt(mapRow); c rand.nextInt(mapCol); } while (mapData[r][c] ! 0); double ex c * TILE_SIZE TILE_SIZE / 2.0; double ey r * TILE_SIZE TILE_SIZE / 2.0; enemyList.add(new Enemy(ex, ey)); } px TILE_SIZE * 1.5; py TILE_SIZE * 1.5; bullet 30; score 0; stepCount 0; gameStart System.currentTimeMillis(); updateHUD(); } // 射击逻辑 private void shoot() { if (bullet 0) return; bullet--; stepCount; double rayX px; double rayY py; double stepX Math.cos(pAngle) * 8; double stepY Math.sin(pAngle) * 8; for (int i 0; i 100; i) { rayX stepX; rayY stepY; int tileC (int) (rayX / TILE_SIZE); int tileR (int) (rayY / TILE_SIZE); if (tileR 0 || tileR mapRow || tileC 0 || tileC mapCol) break; if (mapData[tileR][tileC] 1) break; for (Enemy e : enemyList) { if (!e.alive) continue; double dist Math.hypot(rayX - e.x, rayY - e.y); if (dist TILE_SIZE / 2.0) { e.alive false; score 100; updateHUD(); return; } } } updateHUD(); } // 更新玩家移动 private void updatePlayer() { double dx 0, dy 0; if (keyW) dy - moveSpeed; if (keyS) dy moveSpeed; if (keyA) dx - moveSpeed; if (keyD) dx moveSpeed; // X轴碰撞检测 double testX px dx; int tcX (int) (testX / TILE_SIZE); int trX (int) (py / TILE_SIZE); if (trX 0 trX mapRow tcX 0 tcX mapCol mapData[trX][tcX] 0) { px testX; } // Y轴碰撞检测 double testY py dy; int tcY (int) (px / TILE_SIZE); int trY (int) (testY / TILE_SIZE); if (trY 0 trY mapRow tcY 0 tcY mapCol mapData[trY][tcY] 0) { py testY; } } // 绘制画面 private void renderGame(Graphics g) { Graphics2D g2 (Graphics2D) g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); // 绘制地图 for (int r 0; r mapRow; r) { for (int c 0; c mapCol; c) { if (mapData[r][c] 1) g2.setColor(Color.DARK_GRAY); else g2.setColor(Color.LIGHT_GRAY); g2.fillRect(c * TILE_SIZE, r * TILE_SIZE, TILE_SIZE - 1, TILE_SIZE - 1); } } // 绘制敌人 for (Enemy e : enemyList) { if (!e.alive) continue; g2.setColor(Color.RED); g2.fillOval((int) (e.x - 12), (int) (e.y - 12), 24, 24); } // 绘制玩家 g2.setColor(Color.BLUE); g2.fillOval((int) (px - 14), (int) (py - 14), 28, 28); // 枪械射线 g2.setColor(Color.BLACK); double gunLen 30; double gx px Math.cos(pAngle) * gunLen; double gy py Math.sin(pAngle) * gunLen; g2.drawLine((int) px, (int) py, (int) gx, (int) gy); // 准星 g2.drawLine((int) gx - 5, (int) gy, (int) gx 5, (int) gy); g2.drawLine((int) gx, (int) gy - 5, (int) gx, (int) gy 5); } // 更新顶部文字信息 private void updateHUD() { long sec (System.currentTimeMillis() - gameStart) / 1000; lblTime.setText(时间 sec s); lblStep.setText(步数 stepCount); lblBullet.setText(子弹 bullet); lblScore.setText(得分 score); } // 保存存档 private void saveGameData() { try (BufferedWriter bw new BufferedWriter(new FileWriter(saveFile))) { bw.write(px , py , pAngle , bullet , score , stepCount , gameStart); bw.newLine(); for (Enemy e : enemyList) { bw.write(e.x , e.y , (e.alive ? 1 : 0)); bw.newLine(); } JOptionPane.showMessageDialog(frame, 存档成功); } catch (IOException e) { JOptionPane.showMessageDialog(frame, 存档失败); } } // 读取存档 private void loadGameData() { File f new File(saveFile); if (!f.exists()) { JOptionPane.showMessageDialog(frame, 无存档文件); return; } try (BufferedReader br new BufferedReader(new FileReader(f))) { String[] head br.readLine().split(,); px Double.parseDouble(head[0]); py Double.parseDouble(head[1]); pAngle Double.parseDouble(head[2]); bullet Integer.parseInt(head[3]); score Integer.parseInt(head[4]); stepCount Integer.parseInt(head[5]); gameStart Long.parseLong(head[6]); enemyList.clear(); String line; while ((line br.readLine()) ! null) { String[] arr line.split(,); Enemy e new Enemy(Double.parseDouble(arr[0]), Double.parseDouble(arr[1])); e.alive 1.equals(arr[2]); enemyList.add(e); } updateHUD(); JOptionPane.showMessageDialog(frame, 读取存档成功); } catch (Exception e) { JOptionPane.showMessageDialog(frame, 读取失败); } } public static void main(String[] args) { SwingUtilities.invokeLater(() - new TopDownShooter2D()); } }运行截图如下如图所示代码成功实现了相应的内容但射击代码存在无法移动键盘指令传输不了的bug实验心得这次 Swing 实验我完成三类程序开发小学生算术答题软件、扫雷、2D 俯视射击游戏基本掌握 GUI 组件与事件处理机制。算术程序实现随机四则运算、难度分级与答案校验扫雷和射击游戏搭建完整图形画布完成难度切换、计时计步、存档读档功能。编写中解决了事件导入缺失、抽象方法未实现等报错理解 AWT 事件队列运行逻辑熟练运用鼠标、键盘监听与 Timer 动画刷新提升图形绘制、碰撞检测和文件读写综合编程能力。
java实验5
发布时间：2026/7/2 2:35:21
实验11.相关知识点GUI相关的类组件的属性及功能事件源、监视器、处理事件的接口2.实验目的学习掌握事件处理3.实验要求按以下需求可扩充设计并完成一个能运行的且界面美观的小软件。提交可运行软件程序主要针对小学生的算术计算。可以自定义计算的难度此项可根据功能进行扩展随机获取不一样的题目能通过按键触发确定填写输入的答案是否正确。计算满足 - * /(可扩展操作数可以是整数、小数、分数等等可扩展具体代码ArithmeticTrainer.javapackage sb; import javax.swing.*; import javax.swing.BorderFactory; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Random; public class ArithmeticTrainer extends JFrame { // 界面组件 private JLabel lblQuestion; private JTextField txtAnswer; private JButton btnCheck, btnNext; private JLabel lblTip; private JComboBoxString cbLevel; private Random random new Random(); private int num1, num2, op; private String operator; private int maxNum; // 难度最大值 public ArithmeticTrainer() { // 窗口基础设置 setTitle(小学生算术练习器); setSize(420, 280); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setLocationRelativeTo(null); setLayout(new GridLayout(6, 1, 10, 10)); // 1.难度选择行 JPanel panelLevel new JPanel(); panelLevel.add(new JLabel(选择难度)); String[] levels {简单(0-10), 中等(0-50), 困难(0-100)}; cbLevel new JComboBox(levels); panelLevel.add(cbLevel); add(panelLevel); // 2.题目显示 lblQuestion new JLabel(题目, SwingConstants.CENTER); lblQuestion.setFont(new Font(黑体, Font.BOLD, 24)); add(lblQuestion); // 3.答案输入框 JPanel panelInput new JPanel(); panelInput.add(new JLabel(你的答案)); txtAnswer new JTextField(10); txtAnswer.setFont(new Font(宋体, Font.PLAIN, 18)); panelInput.add(txtAnswer); add(panelInput); // 4.按钮区域 JPanel panelBtn new JPanel(); btnCheck new JButton(判断答案); btnNext new JButton(下一题); panelBtn.add(btnCheck); panelBtn.add(btnNext); add(panelBtn); // 5.提示文字 lblTip new JLabel(请选择难度后点击下一题开始练习, SwingConstants.CENTER); lblTip.setFont(new Font(宋体, Font.PLAIN, 16)); add(lblTip); // 绑定事件 bindEvent(); nextQuestion(); } private void bindEvent() { // 下一题 btnNext.addActionListener(e - { nextQuestion(); txtAnswer.setText(); lblTip.setText(); }); // 校验答案 btnCheck.addActionListener(e - checkAnswer()); } private void nextQuestion() { String level (String) cbLevel.getSelectedItem(); if (level.contains(10)) maxNum 10; else if (level.contains(50)) maxNum 50; else maxNum 100; num1 random.nextInt(maxNum 1); num2 random.nextInt(maxNum 1); op random.nextInt(4); switch (op) { case 0: operator ; break; case 1: operator -; if (num1 num2) { int temp num1; num1 num2; num2 temp; } break; case 2: operator *; break; case 3: operator /; if (num2 0) num2 1; num1 num2 * random.nextInt(maxNum / 2 1); break; } lblQuestion.setText(num1 operator num2 ?); } private void checkAnswer() { String input txtAnswer.getText().trim(); if (input.isEmpty()) { lblTip.setText(请输入答案); lblTip.setForeground(Color.RED); return; } int userAns; try { userAns Integer.parseInt(input); } catch (NumberFormatException e) { lblTip.setText(输入必须是整数); lblTip.setForeground(Color.RED); return; } int rightAns calculateResult(); if (userAns rightAns) { lblTip.setText(回答正确太棒了); lblTip.setForeground(new Color(0, 150, 0)); } else { lblTip.setText(回答错误正确答案 rightAns); lblTip.setForeground(Color.RED); } } private int calculateResult() { switch (op) { case 0: return num1 num2; case 1: return num1 - num2; case 2: return num1 * num2; case 3: return num1 / num2; default: return 0; } } public static void main(String[] args) { SwingUtilities.invokeLater(() - new ArithmeticTrainer().setVisible(true)); } }运行截图如下如图所示这串代码实现了小学生算数练习器的功能实验2选做可AI终端**扫雷、射击。。。游戏良好的界面实现可调节难度计时与计步功能保存/读取游戏进度。。。。可扩展扫雷游戏package sb; import javax.swing.*; import java.awt.*; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.*; import java.util.Random; public class MineSweeperGUI extends JFrame { // 基础配置 private int row, col, mineCount; private int[][] mineMap; private boolean[][] open; private boolean[][] flag; private JButton[][] buttons; private JLabel lblTime, lblStep; private long startTime; private int step; private final String savePath mine_save.txt; private JPanel panelBoard; private Thread timerThread; // 计时线程单独管理避免多线程叠加 public MineSweeperGUI() { setTitle(图形扫雷游戏); setDefaultCloseOperation(EXIT_ON_CLOSE); setLayout(new BorderLayout()); // 顶部菜单栏 JPanel topPanel new JPanel(); JButton btnEasy new JButton(简单5*5); JButton btnMid new JButton(中等8*8); JButton btnHard new JButton(困难10*10); JButton btnSave new JButton(保存进度); JButton btnLoad new JButton(读取存档); lblTime new JLabel(时间0秒); lblStep new JLabel(步数0); topPanel.add(btnEasy); topPanel.add(btnMid); topPanel.add(btnHard); topPanel.add(btnSave); topPanel.add(btnLoad); topPanel.add(lblTime); topPanel.add(lblStep); add(topPanel, BorderLayout.NORTH); // 按钮事件-切换难度 btnEasy.addActionListener(e - initGame(5, 5, 5)); btnMid.addActionListener(e - initGame(8, 8, 10)); btnHard.addActionListener(e - initGame(10, 10, 20)); btnSave.addActionListener(e - saveGame()); btnLoad.addActionListener(e - loadGame()); // 默认开局简单难度 initGame(5, 5, 5); setSize(650, 550); setLocationRelativeTo(null); } // 初始化棋盘 private void initGame(int r, int c, int m) { row r; col c; mineCount m; step 0; startTime System.currentTimeMillis(); mineMap new int[row][col]; open new boolean[row][col]; flag new boolean[row][col]; buttons new JButton[row][col]; // 重置棋盘面板 if (panelBoard ! null) remove(panelBoard); panelBoard new JPanel(new GridLayout(row, col, 2, 2)); panelBoard.setBackground(Color.GRAY); // 生成地雷 Random rand new Random(); int addMine 0; while (addMine mineCount) { int x rand.nextInt(row); int y rand.nextInt(col); if (mineMap[x][y] ! -1) { mineMap[x][y] -1; addMine; } } // 计算周围地雷数 for (int i 0; i row; i) { for (int j 0; j col; j) { if (mineMap[i][j] -1) continue; int cnt 0; for (int dx -1; dx 1; dx) for (int dy -1; dy 1; dy) { int ni i dx, nj j dy; if (ni 0 ni row nj 0 nj col mineMap[ni][nj] -1) cnt; } mineMap[i][j] cnt; } } // 创建按钮鼠标监听 for (int i 0; i row; i) { for (int j 0; j col; j) { JButton btn new JButton(); btn.setPreferredSize(new Dimension(40, 40)); btn.setFont(new Font(黑体, Font.BOLD, 16)); int x i, y j; btn.addMouseListener(new MouseAdapter() { Override public void mouseClicked(MouseEvent e) { if (SwingUtilities.isLeftMouseButton(e)) { openCell(x, y); } else if (SwingUtilities.isRightMouseButton(e)) { markFlag(x, y); } } }); buttons[i][j] btn; panelBoard.add(btn); } } add(panelBoard, BorderLayout.CENTER); updateTimeLabel(); lblStep.setText(步数0); revalidate(); repaint(); // 重启计时线程防止多线程叠加 if (timerThread ! null timerThread.isAlive()) { timerThread.interrupt(); } timerThread new Thread(() - { while (!Thread.currentThread().isInterrupted()) { try { Thread.sleep(1000); updateTimeLabel(); } catch (InterruptedException ex) { break; } } }); timerThread.setDaemon(true); timerThread.start(); } // 左键点开格子按钮直接隐藏方块消失 private void openCell(int x, int y) { if (open[x][y] || flag[x][y]) return; step; lblStep.setText(步数 step); open[x][y] true; JButton btn buttons[x][y]; // 踩到地雷游戏结束 if (mineMap[x][y] -1) { btn.setText(*); btn.setBackground(Color.RED); showAllMine(); JOptionPane.showMessageDialog(this, 踩雷游戏结束); return; } // 核心优化点击后按钮直接隐藏方块消失 btn.setVisible(false); int num mineMap[x][y]; if (num 0) { // 数字格子不隐藏显示数字 btn.setVisible(true); btn.setText(num ); btn.setBackground(Color.LIGHT_GRAY); } else { // 空白格子隐藏并递归展开周围 for (int dx -1; dx 1; dx) for (int dy -1; dy 1; dy) { int nx x dx, ny y dy; if (nx 0 nx row ny 0 ny col) openCell(nx, ny); } } checkWin(); } // 右键插旗/取消 private void markFlag(int x, int y) { if (open[x][y]) return; flag[x][y] !flag[x][y]; buttons[x][y].setText(flag[x][y] ? : ); } // 全部地雷显示失败 private void showAllMine() { for (int i 0; i row; i) for (int j 0; j col; j) { if (mineMap[i][j] -1) { JButton btn buttons[i][j]; btn.setVisible(true); btn.setText(*); btn.setBackground(Color.RED); } } } // 判断胜利 private void checkWin() { int close 0; for (int i 0; i row; i) for (int j 0; j col; j) if (!open[i][j]) close; if (close mineCount) { long t (System.currentTimeMillis() - startTime) / 1000; JOptionPane.showMessageDialog(this, 恭喜通关总步数 step 用时 t 秒); } } // 更新时间标签 private void updateTimeLabel() { long sec (System.currentTimeMillis() - startTime) / 1000; lblTime.setText(时间 sec 秒); } // 保存游戏 private void saveGame() { try (BufferedWriter bw new BufferedWriter(new FileWriter(savePath))) { bw.write(row , col , mineCount , step , startTime); bw.newLine(); // 地图 for (int i 0; i row; i) { for (int j 0; j col; j) bw.write(mineMap[i][j] ); bw.newLine(); } // 打开状态 for (int i 0; i row; i) { for (int j 0; j col; j) bw.write(open[i][j] ? 1 : 0 ); bw.newLine(); } // 旗子 for (int i 0; i row; i) { for (int j 0; j col; j) bw.write(flag[i][j] ? 1 : 0 ); bw.newLine(); } JOptionPane.showMessageDialog(this, 存档成功); } catch (IOException e) { JOptionPane.showMessageDialog(this, 存档失败); } } // 读取存档 private void loadGame() { File file new File(savePath); if (!file.exists()) { JOptionPane.showMessageDialog(this, 无存档文件); return; } try (BufferedReader br new BufferedReader(new FileReader(file))) { String[] head br.readLine().split(,); int r Integer.parseInt(head[0]); int c Integer.parseInt(head[1]); int m Integer.parseInt(head[2]); int s Integer.parseInt(head[3]); long st Long.parseLong(head[4]); // 重建界面 initGame(r, c, m); step s; startTime st; lblStep.setText(步数 step); // 读取地图 for (int i 0; i r; i) { String[] arr br.readLine().split( ); for (int j 0; j c; j) mineMap[i][j] Integer.parseInt(arr[j]); } // 读取打开状态 for (int i 0; i r; i) { String[] arr br.readLine().split( ); for (int j 0; j c; j) open[i][j] 1.equals(arr[j]); } // 读取旗子 for (int i 0; i r; i) { String[] arr br.readLine().split( ); for (int j 0; j col; j) flag[i][j] 1.equals(arr[j]); } // 刷新界面显示存档状态 refreshBoard(); JOptionPane.showMessageDialog(this, 读取存档成功); } catch (Exception e) { JOptionPane.showMessageDialog(this, 读取失败); } } // 根据存档刷新棋盘显示 private void refreshBoard() { for (int i 0; i row; i) { for (int j 0; j col; j) { JButton btn buttons[i][j]; btn.setText(); btn.setBackground(null); btn.setVisible(true); if (flag[i][j]) btn.setText(); if (open[i][j]) { if (mineMap[i][j] -1) { btn.setText(*); btn.setBackground(Color.RED); } else if (mineMap[i][j] 0) { btn.setText(mineMap[i][j] ); btn.setBackground(Color.LIGHT_GRAY); } else { // 空白格子隐藏方块消失 btn.setVisible(false); } } } } } public static void main(String[] args) { SwingUtilities.invokeLater(() - new MineSweeperGUI().setVisible(true)); } }运行截图如下射击游戏代码package sb; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import java.io.File; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileReader; import java.io.FileWriter; import java.io.IOException; import java.util.ArrayList; import java.util.Random; public class TopDownShooter2D { private static final int WIN_WIDTH 800; private static final int WIN_HEIGHT 650; private static final int TILE_SIZE 40; // 地图 1墙体 0空地 private final int[][] mapData { {1,1,1,1,1,1,1,1,1,1}, {1,0,0,0,1,0,0,0,0,1}, {1,0,1,0,1,0,1,1,0,1}, {1,0,1,0,0,0,0,1,0,1}, {1,0,1,1,1,1,0,1,0,1}, {1,0,0,0,0,0,0,0,0,1}, {1,0,1,1,0,1,1,1,0,1}, {1,0,0,0,0,0,0,0,0,1}, {1,1,1,1,1,1,1,1,1,1} }; private final int mapRow mapData.length; private final int mapCol mapData[0].length; // 玩家参数 private double px 60, py 60; private double pAngle 0; private final double moveSpeed 3; // 按键状态 private boolean keyW, keyS, keyA, keyD; // 游戏数据 private ArrayListEnemy enemyList new ArrayList(); private int bullet 30; private int score 0; private long gameStart; private int stepCount 0; private final String saveFile shooter_save.txt; // UI private JFrame frame; private GamePanel gamePanel; private JLabel lblTime, lblStep, lblBullet, lblScore; private Timer gameTimer; // 敌人类 static class Enemy { double x, y; boolean alive true; Enemy(double x, double y) { this.x x; this.y y; } } // 画布绘制面板 private class GamePanel extends JPanel { public GamePanel() { setPreferredSize(new Dimension(mapCol * TILE_SIZE, mapRow * TILE_SIZE)); setBackground(Color.BLACK); // 删掉报错的 setInputContext(null) bindGlobalKeys(); } // 全局按键绑定 private void bindGlobalKeys() { InputMap im getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW); ActionMap am getActionMap(); // W键 im.put(KeyStroke.getKeyStroke(W), pressW); am.put(pressW, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyW true; } }); im.put(KeyStroke.getKeyStroke(released W), releaseW); am.put(releaseW, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyW false; } }); // S键 im.put(KeyStroke.getKeyStroke(S), pressS); am.put(pressS, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyS true; } }); im.put(KeyStroke.getKeyStroke(released S), releaseS); am.put(releaseS, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyS false; } }); // A键 im.put(KeyStroke.getKeyStroke(A), pressA); am.put(pressA, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyA true; } }); im.put(KeyStroke.getKeyStroke(released A), releaseA); am.put(releaseA, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyA false; } }); // D键 im.put(KeyStroke.getKeyStroke(D), pressD); am.put(pressD, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyD true; } }); im.put(KeyStroke.getKeyStroke(released D), releaseD); am.put(releaseD, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { keyD false; } }); // R换弹 im.put(KeyStroke.getKeyStroke(R), pressR); am.put(pressR, new AbstractAction() { Override public void actionPerformed(ActionEvent e) { bullet 30; updateHUD(); } }); } Override protected void paintComponent(Graphics g) { super.paintComponent(g); renderGame(g); } } public TopDownShooter2D() { frame new JFrame(2D俯视射击游戏); frame.setSize(WIN_WIDTH, WIN_HEIGHT); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLocationRelativeTo(null); frame.setLayout(new BorderLayout()); // 顶部信息栏 JPanel topBar new JPanel(); JButton easyBtn new JButton(简单); JButton midBtn new JButton(中等); JButton hardBtn new JButton(困难); JButton saveBtn new JButton(保存进度); JButton loadBtn new JButton(读取存档); lblTime new JLabel(时间0s); lblStep new JLabel(步数0); lblBullet new JLabel(子弹30); lblScore new JLabel(得分0); topBar.add(easyBtn); topBar.add(midBtn); topBar.add(hardBtn); topBar.add(saveBtn); topBar.add(loadBtn); topBar.add(lblTime); topBar.add(lblStep); topBar.add(lblBullet); topBar.add(lblScore); frame.add(topBar, BorderLayout.NORTH); // 游戏画布 gamePanel new GamePanel(); frame.add(gamePanel, BorderLayout.CENTER); // 按钮事件 easyBtn.addActionListener(e - startGame(3)); midBtn.addActionListener(e - startGame(6)); hardBtn.addActionListener(e - startGame(10)); saveBtn.addActionListener(e - saveGameData()); loadBtn.addActionListener(e - loadGameData()); // 鼠标瞄准、射击 gamePanel.addMouseMotionListener(new MouseAdapter() { Override public void mouseMoved(MouseEvent e) { pAngle Math.atan2(e.getY() - py, e.getX() - px); } }); gamePanel.addMouseListener(new MouseAdapter() { Override public void mousePressed(MouseEvent e) { gamePanel.requestFocusInWindow(); if (SwingUtilities.isLeftMouseButton(e)) { shoot(); } } }); // 游戏刷新定时器 gameTimer new Timer(16, e - { updatePlayer(); updateHUD(); gamePanel.repaint(); }); gameTimer.start(); startGame(3); frame.setVisible(true); // 窗口打开自动获取焦点 SwingUtilities.invokeLater(gamePanel::requestFocusInWindow); } // 初始化游戏、生成敌人 private void startGame(int enemyNum) { enemyList.clear(); Random rand new Random(); for (int i 0; i enemyNum; i) { int r, c; do { r rand.nextInt(mapRow); c rand.nextInt(mapCol); } while (mapData[r][c] ! 0); double ex c * TILE_SIZE TILE_SIZE / 2.0; double ey r * TILE_SIZE TILE_SIZE / 2.0; enemyList.add(new Enemy(ex, ey)); } px TILE_SIZE * 1.5; py TILE_SIZE * 1.5; bullet 30; score 0; stepCount 0; gameStart System.currentTimeMillis(); updateHUD(); } // 射击逻辑 private void shoot() { if (bullet 0) return; bullet--; stepCount; double rayX px; double rayY py; double stepX Math.cos(pAngle) * 8; double stepY Math.sin(pAngle) * 8; for (int i 0; i 100; i) { rayX stepX; rayY stepY; int tileC (int) (rayX / TILE_SIZE); int tileR (int) (rayY / TILE_SIZE); if (tileR 0 || tileR mapRow || tileC 0 || tileC mapCol) break; if (mapData[tileR][tileC] 1) break; for (Enemy e : enemyList) { if (!e.alive) continue; double dist Math.hypot(rayX - e.x, rayY - e.y); if (dist TILE_SIZE / 2.0) { e.alive false; score 100; updateHUD(); return; } } } updateHUD(); } // 更新玩家移动 private void updatePlayer() { double dx 0, dy 0; if (keyW) dy - moveSpeed; if (keyS) dy moveSpeed; if (keyA) dx - moveSpeed; if (keyD) dx moveSpeed; // X轴碰撞检测 double testX px dx; int tcX (int) (testX / TILE_SIZE); int trX (int) (py / TILE_SIZE); if (trX 0 trX mapRow tcX 0 tcX mapCol mapData[trX][tcX] 0) { px testX; } // Y轴碰撞检测 double testY py dy; int tcY (int) (px / TILE_SIZE); int trY (int) (testY / TILE_SIZE); if (trY 0 trY mapRow tcY 0 tcY mapCol mapData[trY][tcY] 0) { py testY; } } // 绘制画面 private void renderGame(Graphics g) { Graphics2D g2 (Graphics2D) g; g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); // 绘制地图 for (int r 0; r mapRow; r) { for (int c 0; c mapCol; c) { if (mapData[r][c] 1) g2.setColor(Color.DARK_GRAY); else g2.setColor(Color.LIGHT_GRAY); g2.fillRect(c * TILE_SIZE, r * TILE_SIZE, TILE_SIZE - 1, TILE_SIZE - 1); } } // 绘制敌人 for (Enemy e : enemyList) { if (!e.alive) continue; g2.setColor(Color.RED); g2.fillOval((int) (e.x - 12), (int) (e.y - 12), 24, 24); } // 绘制玩家 g2.setColor(Color.BLUE); g2.fillOval((int) (px - 14), (int) (py - 14), 28, 28); // 枪械射线 g2.setColor(Color.BLACK); double gunLen 30; double gx px Math.cos(pAngle) * gunLen; double gy py Math.sin(pAngle) * gunLen; g2.drawLine((int) px, (int) py, (int) gx, (int) gy); // 准星 g2.drawLine((int) gx - 5, (int) gy, (int) gx 5, (int) gy); g2.drawLine((int) gx, (int) gy - 5, (int) gx, (int) gy 5); } // 更新顶部文字信息 private void updateHUD() { long sec (System.currentTimeMillis() - gameStart) / 1000; lblTime.setText(时间 sec s); lblStep.setText(步数 stepCount); lblBullet.setText(子弹 bullet); lblScore.setText(得分 score); } // 保存存档 private void saveGameData() { try (BufferedWriter bw new BufferedWriter(new FileWriter(saveFile))) { bw.write(px , py , pAngle , bullet , score , stepCount , gameStart); bw.newLine(); for (Enemy e : enemyList) { bw.write(e.x , e.y , (e.alive ? 1 : 0)); bw.newLine(); } JOptionPane.showMessageDialog(frame, 存档成功); } catch (IOException e) { JOptionPane.showMessageDialog(frame, 存档失败); } } // 读取存档 private void loadGameData() { File f new File(saveFile); if (!f.exists()) { JOptionPane.showMessageDialog(frame, 无存档文件); return; } try (BufferedReader br new BufferedReader(new FileReader(f))) { String[] head br.readLine().split(,); px Double.parseDouble(head[0]); py Double.parseDouble(head[1]); pAngle Double.parseDouble(head[2]); bullet Integer.parseInt(head[3]); score Integer.parseInt(head[4]); stepCount Integer.parseInt(head[5]); gameStart Long.parseLong(head[6]); enemyList.clear(); String line; while ((line br.readLine()) ! null) { String[] arr line.split(,); Enemy e new Enemy(Double.parseDouble(arr[0]), Double.parseDouble(arr[1])); e.alive 1.equals(arr[2]); enemyList.add(e); } updateHUD(); JOptionPane.showMessageDialog(frame, 读取存档成功); } catch (Exception e) { JOptionPane.showMessageDialog(frame, 读取失败); } } public static void main(String[] args) { SwingUtilities.invokeLater(() - new TopDownShooter2D()); } }运行截图如下如图所示代码成功实现了相应的内容但射击代码存在无法移动键盘指令传输不了的bug实验心得这次 Swing 实验我完成三类程序开发小学生算术答题软件、扫雷、2D 俯视射击游戏基本掌握 GUI 组件与事件处理机制。算术程序实现随机四则运算、难度分级与答案校验扫雷和射击游戏搭建完整图形画布完成难度切换、计时计步、存档读档功能。编写中解决了事件导入缺失、抽象方法未实现等报错理解 AWT 事件队列运行逻辑熟练运用鼠标、键盘监听与 Timer 动画刷新提升图形绘制、碰撞检测和文件读写综合编程能力。
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