用java编写窗体应用程序，安排一个文本框、一个按钮和一个标签，从文本框录入一个数字（0～9），点击按钮将其对应的英文单词(如：zero，one等)显示在标签中 。进一步，扩展数据的范围（如：0～100），如何修改程序实现翻译。

以下是Java代码实现：

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

public class NumberToWordConverter extends JFrame implements ActionListener {
    private JTextField textField;
    private JLabel resultLabel;

    private String[] wordArray = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine"};

    public NumberToWordConverter() {
        super("Number to Word Converter");

        // 设置窗体布局
        setLayout(new FlowLayout());

        // 创建文本框和标签
        textField = new JTextField(10);
        add(textField);

        JButton button = new JButton("Convert");
        add(button);

        resultLabel = new JLabel("");
        add(resultLabel);

        // 为按钮添加动作监听器
        button.addActionListener(this);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(250, 100);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        String inputText = textField.getText();
        try {
            int number = Integer.parseInt(inputText);
            if (number >= 0 && number <= 9) {
                resultLabel.setText(wordArray[number]);
            } else {
                resultLabel.setText("Number out of range!");
            }
        } catch (NumberFormatException ex) {
            resultLabel.setText("Invalid input!");
        }
    }

    public static void main(String[] args) {
        new NumberToWordConverter();
    }
}

如果要扩展数据的范围到 0~100，可以修改 `wordArray` 数组为包含 101 个元素的字符串数组，其中前 10 个元素为 0~9 对应的英文单词，后面的元素为 10~100 对应的英文单词，可以通过一个 switch 语句实现转换。修改后的代码如下：

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

public class NumberToWordConverter extends JFrame implements ActionListener {
    private JTextField textField;
    private JLabel resultLabel;

    private String[] wordArray = {"zero", "one", "two", "three", "four", "five", "six", "seven", "eight", "nine",
                                  "ten", "eleven", "twelve", "thirteen", "fourteen", "fifteen", "sixteen",
                                  "seventeen", "eighteen", "nineteen", "twenty", "twenty-one", "twenty-two",
                                  "twenty-three", "twenty-four", "twenty-five", "twenty-six", "twenty-seven",
                                  "twenty-eight", "twenty-nine", "thirty", "thirty-one", "thirty-two",
                                  "thirty-three", "thirty-four", "thirty-five", "thirty-six", "thirty-seven",
                                  "thirty-eight", "thirty-nine", "forty", "forty-one", "forty-two", "forty-three",
                                  "forty-four", "forty-five", "forty-six", "forty-seven", "forty-eight",
                                  "forty-nine", "fifty", "fifty-one", "fifty-two", "fifty-three", "fifty-four",
                                  "fifty-five", "fifty-six", "fifty-seven", "fifty-eight", "fifty-nine", "sixty",
                                  "sixty-one", "sixty-two", "sixty-three", "sixty-four", "sixty-five", "sixty-six",
                                  "sixty-seven", "sixty-eight", "sixty-nine", "seventy", "seventy-one",
                                  "seventy-two", "seventy-three", "seventy-four", "seventy-five", "seventy-six",
                                  "seventy-seven", "seventy-eight", "seventy-nine", "eighty", "eighty-one",
                                  "eighty-two", "eighty-three", "eighty-four", "eighty-five", "eighty-six",
                                  "eighty-seven", "eighty-eight", "eighty-nine", "ninety", "ninety-one",
                                  "ninety-two", "ninety-three", "ninety-four", "ninety-five", "ninety-six",
                                  "ninety-seven", "ninety-eight", "ninety-nine", "one hundred"};

    public NumberToWordConverter() {
        super("Number to Word Converter");

        // 设置窗体布局
        setLayout(new FlowLayout());

        // 创建文本框和标签
        textField = new JTextField(10);
        add(textField);

        JButton button = new JButton("Convert");
        add(button);

        resultLabel = new JLabel("");
        add(resultLabel);

        // 为按钮添加动作监听器
        button.addActionListener(this);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(300, 100);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        String inputText = textField.getText();
        try {
            int number = Integer.parseInt(inputText);
            if (number >= 0 && number <= 100) {
                resultLabel.setText(wordArray[number]);
            } else {
                resultLabel.setText("Number out of range!");
            }
        } catch (NumberFormatException ex) {
            resultLabel.setText("Invalid input!");
        }
    }

    public static void main(String[] args) {
        new NumberToWordConverter();
    }
}