帮我用Java和gui写一个用户管理系统界面

好的，下面是一个简单的用户管理系统界面的代码示例：

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

public class UserManagementSystemGUI extends JFrame implements ActionListener {
    private JTextField nameField;
    private JTextField ageField;
    private JTextField emailField;
    private JButton addButton;
    private JButton clearButton;
    private JTextArea userArea;

    public UserManagementSystemGUI() {
        setTitle("用户管理系统");
        setSize(500, 400);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel panel = new JPanel();
        panel.setLayout(new GridBagLayout());
        GridBagConstraints c = new GridBagConstraints();

        JLabel nameLabel = new JLabel("姓名:");
        c.gridx = 0;
        c.gridy = 0;
        c.anchor = GridBagConstraints.WEST;
        panel.add(nameLabel, c);

        nameField = new JTextField(20);
        c.gridx = 1;
        c.gridy = 0;
        c.anchor = GridBagConstraints.EAST;
        panel.add(nameField, c);

        JLabel ageLabel = new JLabel("年龄:");
        c.gridx = 0;
        c.gridy = 1;
        c.anchor = GridBagConstraints.WEST;
        panel.add(ageLabel, c);

        ageField = new JTextField(20);
        c.gridx = 1;
        c.gridy = 1;
        c.anchor = GridBagConstraints.EAST;
        panel.add(ageField, c);

        JLabel emailLabel = new JLabel("邮箱:");
        c.gridx = 0;
        c.gridy = 2;
        c.anchor = GridBagConstraints.WEST;
        panel.add(emailLabel, c);

        emailField = new JTextField(20);
        c.gridx = 1;
        c.gridy = 2;
        c.anchor = GridBagConstraints.EAST;
        panel.add(emailField, c);

        addButton = new JButton("添加用户");
        addButton.addActionListener(this);
        c.gridx = 0;
        c.gridy = 3;
        c.anchor = GridBagConstraints.CENTER;
        panel.add(addButton, c);

        clearButton = new JButton("清空");
        clearButton.addActionListener(this);
        c.gridx = 1;
        c.gridy = 3;
        c.anchor = GridBagConstraints.CENTER;
        panel.add(clearButton, c);

        userArea = new JTextArea(15, 40);
        JScrollPane scrollPane = new JScrollPane(userArea);
        c.gridx = 0;
        c.gridy = 4;
        c.gridwidth = 2;
        c.anchor = GridBagConstraints.CENTER;
        panel.add(scrollPane, c);

        add(panel);
        setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == addButton) {
            String name = nameField.getText();
            String age = ageField.getText();
            String email = emailField.getText();
            String user = "姓名：" + name + "，年龄：" + age + "，邮箱：" + email + "\n";
            userArea.append(user);
            nameField.setText("");
            ageField.setText("");
            emailField.setText("");
        } else if (e.getSource() == clearButton) {
            userArea.setText("");
            nameField.setText("");
            ageField.setText("");
            emailField.setText("");
        }
    }

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

这个界面包含三个文本框和两个按钮。你可以在文本框中输入姓名、年龄和邮箱，然后点击“添加用户”按钮将用户信息添加到文本区域中。如果你想要清空所有输入和输出，可以点击“清空”按钮。