用Java产生一个软键盘

产生一个软键盘的方法有很多，以下是一个简单的Java代码示例，可以产生一个基本的软键盘：

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

public class SoftKeyboard extends JFrame {
    private JTextField textField;

    public SoftKeyboard() {
        super("Soft Keyboard");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new BorderLayout());
        textField = new JTextField();
        add(textField, BorderLayout.NORTH);
        JPanel keyboardPanel = new JPanel(new GridLayout(4, 3));
        for (int i = 1; i <= 9; i++) {
            JButton button = new JButton(String.valueOf(i));
            button.addActionListener(e -> {
                textField.setText(textField.getText() + button.getText());
            });
            keyboardPanel.add(button);
        }
        JButton button0 = new JButton("0");
        button0.addActionListener(e -> {
            textField.setText(textField.getText() + button0.getText());
        });
        keyboardPanel.add(button0);
        JButton clearButton = new JButton("Clear");
        clearButton.addActionListener(e -> {
            textField.setText("");
        });
        keyboardPanel.add(clearButton);
        add(keyboardPanel, BorderLayout.CENTER);
        pack();
        setVisible(true);
    }

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

这个软键盘只包含数字和清除按钮，但你可以根据自己的需要添加更多的按钮和功能。