java图形化界面英语词典

以下是一个基于Java Swing实现的英语词典的例子，它包括英译中和中译英两种翻译方式，以及生词本功能，用户可以将生词保存起来。

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

public class Dictionary extends JFrame implements ActionListener {
    private static final long serialVersionUID = 1L;
    private JLabel label;
    private JTextField textField;
    private JTextArea textArea;
    private JButton button1, button2, button3, button4;
    private JScrollPane scrollPane;

    public Dictionary() {
        setTitle("英语词典");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(500, 400);
        setLocationRelativeTo(null);

        label = new JLabel("请输入单词：");
        textField = new JTextField(20);
        textArea = new JTextArea(15, 30);
        textArea.setEditable(false);
        scrollPane = new JScrollPane(textArea);

        button1 = new JButton("英译中");
        button2 = new JButton("中译英");
        button3 = new JButton("添加生词");
        button4 = new JButton("查看生词本");

        JPanel panel1 = new JPanel();
        panel1.add(label);
        panel1.add(textField);

        JPanel panel2 = new JPanel();
        panel2.add(button1);
        panel2.add(button2);
        panel2.add(button3);
        panel2.add(button4);

        setLayout(new BorderLayout());
        add(panel1, BorderLayout.NORTH);
        add(scrollPane, BorderLayout.CENTER);
        add(panel2, BorderLayout.SOUTH);

        button1.addActionListener(this);
        button2.addActionListener(this);
        button3.addActionListener(this);
        button4.addActionListener(this);
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == button1) {
            String word = textField.getText();
            String meaning = getMeaning(word, "english_chinese.txt");
            textArea.setText(meaning);
        } else if (e.getSource() == button2) {
            String word = textField.getText();
            String meaning = getMeaning(word, "chinese_english.txt");
            textArea.setText(meaning);
        } else if (e.getSource() == button3) {
            String word = textField.getText();
            addWord(word, "new_words.txt");
            JOptionPane.showMessageDialog(this, "添加成功！");
        } else if (e.getSource() == button4) {
            String words = getWords("new_words.txt");
            textArea.setText(words);
        }
    }

    public String getMeaning(String word, String fileName) {
        String meaning = "";
        try {
            FileReader fr = new FileReader(fileName);
            BufferedReader br = new BufferedReader(fr);
            String line = "";
            while ((line = br.readLine()) != null) {
                String[] parts = line.split("\t");
                if (parts[0].equalsIgnoreCase(word)) {
                    meaning = parts[1];
                    break;
                }
            }
            br.close();
            fr.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (meaning.equals("")) {
            meaning = "未找到该单词！";
        }
        return meaning;
    }

    public void addWord(String word, String fileName) {
        try {
            FileWriter fw = new FileWriter(fileName, true);
            BufferedWriter bw = new BufferedWriter(fw);
            bw.write(word);
            bw.newLine();
            bw.close();
            fw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public String getWords(String fileName) {
        String words = "";
        try {
            FileReader fr = new FileReader(fileName);
            BufferedReader br = new BufferedReader(fr);
            String line = "";
            while ((line = br.readLine()) != null) {
                words += line + "\n";
            }
            br.close();
            fr.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        if (words.equals("")) {
            words = "生词本为空！";
        }
        return words;
    }

    public static void main(String[] args) {
        Dictionary dict = new Dictionary();
        dict.setVisible(true);
    }
}