import java.awt.*; import java.awt.event.*; import java.util.Timer; import javax.swing.*; public class gameone { Frame frame = new Frame(); //桌面宽高 private final int table_width = 300; private final int table_hight = 400; //球拍宽高 private final int racket_width = 300; private final int racket_hight = 400; //小球大小 private final int ball_size = 16; //小球位置 private int ballX = 120; private int ballY = 20; //小球速度 private int speedX = 10; private int speedY = 5; //球拍位置 private int racketX = 120; private final int racketY = 340; private boolean isOver = false; private Timer timer; private class MyCanvas extends Canvas{ @Override public void paint(Graphics g) { if(isOver){ g.setColor(Color.BLUE); g.setFont(new Font("Times",Font.BOLD,30)); g.drawString("Game Over!",50,200); } else{ g.setColor(Color.RED); g.fillOval(ballX,ballY,ball_size,ball_size); g.setColor(Color.PINK); g.fillRect(racketX,racketY,racket_width,racket_hight); } } } MyCanvas drawArea = new MyCanvas(); public void init(){ KeyListener listener = new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { int keyCode = e.getKeyCode(); if(keyCode == KeyEvent.VK_LEFT){ if(racketX > 0){ racketX -= 10; } } if(keyCode == KeyEvent.VK_RIGHT){ if(racketX < (table_width - racket_width)) racketX += 10; } } }; frame.addKeyListener(listener); drawArea.addKeyListener(listener); ActionListener task = new ActionListener() { @Override public void actionPerformed(ActionEvent e) { if(ballX <= 0 || ballX >= (table_width - ball_size)) speedX = -speedX; if(ballY <= 0 || ballY >= racketY - ball_size && ballX > racketX && ballX <racketX +racket_width){ speedY = -speedY; } if(ballY > racketY - ball_size && (ballX < racketX || ballX > racketX + racket_width)) { timer.stop(); isOver = true; drawArea.repaint(); } ballX += speedX; ballY += speedY; drawArea.repaint(); } }; timer = new Timer(100,task); timer.start(); drawArea.setPreferredSize(new Dimension(table_width,table_hight)); frame.add(drawArea); frame.pack(); frame.setVisible(true); } public static void main(String[] args){ new gameone().init(); } }哪里错了

import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.Timer; import java.util.TimerTask; public class RestReminder extends JFrame { private JLabel timeLabel; private JButton setButton; private JButton resetButton; private JTextField restTimeField; private Timer timer; private int restTime; // 休息时间，单位为分钟 public RestReminder() { // 初始化界面和组件 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setTitle("休息提醒"); setSize(300, 200); setLocationRelativeTo(null); timeLabel = new JLabel("00:00"); timeLabel.setFont(new Font("宋体", Font.BOLD, 40)); timeLabel.setHorizontalAlignment(SwingConstants.CENTER); setButton = new JButton("设置"); resetButton = new JButton("重置"); restTimeField = new JTextField(); restTimeField.setColumns(10); JPanel panel = new JPanel(new GridLayout(3, 1)); panel.add(timeLabel); JPanel buttonPanel = new JPanel(new FlowLayout()); buttonPanel.add(setButton); buttonPanel.add(resetButton); panel.add(buttonPanel); JPanel restTimePanel = new JPanel(new FlowLayout()); restTimePanel.add(new JLabel("休息时间（分钟）：")); restTimePanel.add(restTimeField); panel.add(restTimePanel); add(panel); // 添加事件监听器 setButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { try { restTime = Integer.parseInt(restTimeField.getText()); startTimer(); } catch (NumberFormatException ex) { JOptionPane.showMessageDialog(RestReminder.this, "请输入正确的休息时间（整数）", "错误", JOptionPane.ERROR_MESSAGE); } } }); resetButton.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { stopTimer(); timeLabel.setText("00:00"); } }); } // 实现设置休息时间和提醒时间的功能 private void startTimer() { if (timer != null) { stopTimer(); } int delay = 1000; // 延迟1秒钟开始执行任务 int period = 60 * 1000; // 每隔1分钟执行一次任务 timer = new Timer(); timer.scheduleAtFixedRate(new TimerTask() { int time = restTime; @Override public void run() { if (time <= 0) { JOptionPane.showMessageDialog(RestReminder.this, "休息时间到了，请休息一下！", "休息提醒", JOptionPane.INFORMATION_MESSAGE); time = restTime; } int minute = time / 60; int second = time % 60; timeLabel.setText(String.format("%02d:%02d", minute, second)); time--; } }, delay, period); } private void stopTimer() { if (timer != null) { timer.cancel(); timer = null; } } public static void main(String[] args) { RestReminder reminder = new RestReminder(); reminder.setVisible(true); } }

好的，我会将你提供的代码添加到生词本中，并增加一个测试功能，让用户选择单词的含义。 以下是修改后的代码： ``` import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.*; import java.util.ArrayList; import java.util.List; import java.util.Random; import javax.swing.*; public class Recite extends JFrame { private JLabel lblWord = new JLabel("word"); private JLabel lblMeaning = new JLabel("meaning"); private JButton btnAdd = new JButton("Add to Vocabulary"); private JButton btnTest = new JButton("Test"); private JRadioButton[] radioButtons = new JRadioButton[4]; private ButtonGroup radioGroup = new ButtonGroup(); private List<String> words = new ArrayList<>(); private List<String> meanings = new ArrayList<>(); private List<String> vocabulary = new ArrayList<>(); private int current = 0; private Random random = new Random(); public Recite() { initUI(); loadWords(); } private void initUI() { setSize(400, 200); setLayout(new GridLayout(3, 2)); getContentPane().add(lblWord); getContentPane().add(lblMeaning); getContentPane().add(btnAdd); getContentPane().add(btnTest); for (int i = 0; i < 4; i++) { radioButtons[i] = new JRadioButton(); radioGroup.add(radioButtons[i]); getContentPane().add(radioButtons[i]); } setDefaultCloseOperation(EXIT_ON_CLOSE); setVisible(true); } private void loadWords() { try { String fileName = "College_Grade4.txt"; String charset = "GB2312"; BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(fileName), charset)); String line; while ((line = reader.readLine()) != null) { line = line.trim(); if (line.length() == 0) continue; int idx = line.indexOf("\t"); words.add(line.substring(0, idx)); meanings.add(line.substring(idx + 1)); } reader.close(); } catch (IOException ex) { ex.printStackTrace(); } } public void start() { new javax.swing.Timer(1000, (e) -> { lblWord.setText(words.get(current)); lblMeaning.setText(meanings.get(current)); current++; if (current >= words.size()) { current = 0; } }).start(); btnAdd.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { vocabulary.add(words.get(current - 1)); JOptionPane.showMessageDialog(Recite.this, "Added to vocabulary!"); } }); btnTest.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { int correctIndex = random.nextInt(4); String[] options = new String[4]; for (int i = 0; i < 4; i++) { if (i == correctIndex) { options[i] = meanings.get(current - 1); } else { options[i] = meanings.get(random.nextInt(meanings.size())); } } for (int i = 0; i < 4; i++) { radioButtons[i].setText(options[i]); } int result = JOptionPane.showOptionDialog(Recite.this, "What is the meaning of \"" + words.get(current - 1) + "\"?", "Test", JOptionPane.DEFAULT_OPTION, JOptionPane.QUESTION_MESSAGE, null, options, options[0]); if (result == correctIndex) { JOptionPane.showMessageDialog(Recite.this, "Correct!"); } else { JOptionPane.showMessageDialog(Recite.this, "Incorrect! The correct answer is \"" + meanings.get(current - 1) + "\"."); } } }); } public static void main(String[] args) { Recite f = new Recite(); f.start(); } } ``` 现在，你可以运行这个代码并开始背单词了！