用java JFrame写一个背单词程序

好的，我可以给你提供一个简单的 Java JFrame 背单词程序的代码示例，具体实现方式如下：

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Vocabulary extends JFrame {
    private static final long serialVersionUID = 1L;
    private JPanel contentPane;
    private JButton btnShowWord;
    private JLabel lblWord;
    private JLabel lblMeaning;

    // 单词列表
    private String[] words = { "apple", "banana", "cherry", "date", "elderberry" };
    // 对应的单词释义
    private String[] meanings = { "苹果", "香蕉", "樱桃", "枣", "接骨木果" };
    // 当前显示的单词索引
    private int currentIndex = 0;

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                try {
                    Vocabulary frame = new Vocabulary();
                    frame.setVisible(true);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
    }

    public Vocabulary() {
        setTitle("背单词程序");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(100, 100, 400, 200);
        contentPane = new JPanel();
        contentPane.setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
        setContentPane(contentPane);
        contentPane.setLayout(new BorderLayout(0, 0));

        JPanel buttonPanel = new JPanel();
        contentPane.add(buttonPanel, BorderLayout.SOUTH);

        btnShowWord = new JButton("显示单词");
        btnShowWord.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                showNextWord();
            }
        });
        buttonPanel.add(btnShowWord);

        JPanel wordPanel = new JPanel();
        contentPane.add(wordPanel, BorderLayout.CENTER);
        wordPanel.setLayout(new GridLayout(2, 1, 0, 0));

        lblWord = new JLabel(words[currentIndex]);
        lblWord.setFont(new Font("宋体", Font.PLAIN, 30));
        lblWord.setHorizontalAlignment(SwingConstants.CENTER);
        wordPanel.add(lblWord);

        lblMeaning = new JLabel(meanings[currentIndex]);
        lblMeaning.setFont(new Font("宋体", Font.PLAIN, 20));
        lblMeaning.setHorizontalAlignment(SwingConstants.CENTER);
        wordPanel.add(lblMeaning);
    }

    // 显示下一个单词
    private void showNextWord() {
        currentIndex = (currentIndex + 1) % words.length;
        lblWord.setText(words[currentIndex]);
        lblMeaning.setText(meanings[currentIndex]);
    }
}

程序界面如下：


该程序会在程序界面中显示一个单词和对应的释义，点击“显示单词”按钮可以切换到下一个单词。你可以根据自己的需求进行修改和完善。