使用Java语言做一个分普通用户和管理员的增删查改图形化界面代码

好的，以下是一个简单的Java Swing实现的分普通用户和管理员的增删查改图形化界面的代码示例：

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

public class UserManagementGUI extends JFrame implements ActionListener {
    private JLabel titleLabel, idLabel, nameLabel, typeLabel;
    private JTextField idField, nameField;
    private JComboBox<String> typeBox;
    private JButton addButton, deleteButton, updateButton, queryButton;
    private JTable dataTable;
    private JScrollPane tableScrollPane;
    private JPanel contentPanel;

    public UserManagementGUI() {
        super("User Management");
        setSize(600, 400);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLocationRelativeTo(null);

        titleLabel = new JLabel("User Management", JLabel.CENTER);
        titleLabel.setFont(new Font("Arial", Font.PLAIN, 24));

        idLabel = new JLabel("ID:");
        nameLabel = new JLabel("Name:");
        typeLabel = new JLabel("Type:");

        idField = new JTextField();
        nameField = new JTextField();
        typeBox = new JComboBox<String>(new String[]{"Admin", "User"});

        addButton = new JButton("Add");
        addButton.addActionListener(this);
        deleteButton = new JButton("Delete");
        deleteButton.addActionListener(this);
        updateButton = new JButton("Update");
        updateButton.addActionListener(this);
        queryButton = new JButton("Query");
        queryButton.addActionListener(this);

        dataTable = new JTable(new Object[][]{}, new Object[]{"ID", "Name", "Type"});
        tableScrollPane = new JScrollPane(dataTable);

        contentPanel = new JPanel(new BorderLayout());
        contentPanel.add(titleLabel, BorderLayout.NORTH);

        JPanel formPanel = new JPanel(new GridLayout(3, 2));
        formPanel.add(idLabel);
        formPanel.add(idField);
        formPanel.add(nameLabel);
        formPanel.add(nameField);
        formPanel.add(typeLabel);
        formPanel.add(typeBox);
        contentPanel.add(formPanel, BorderLayout.WEST);

        JPanel buttonPanel = new JPanel(new GridLayout(4, 1));
        buttonPanel.add(addButton);
        buttonPanel.add(deleteButton);
        buttonPanel.add(updateButton);
        buttonPanel.add(queryButton);
        contentPanel.add(buttonPanel, BorderLayout.EAST);

        contentPanel.add(tableScrollPane, BorderLayout.CENTER);

        add(contentPanel);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == addButton) {
            String id = idField.getText();
            String name = nameField.getText();
            String type = (String) typeBox.getSelectedItem();
            // TODO: add new user
        } else if (e.getSource() == deleteButton) {
            int selectedRow = dataTable.getSelectedRow();
            if (selectedRow != -1) {
                String id = (String) dataTable.getValueAt(selectedRow, 0);
                // TODO: delete user with id
            }
        } else if (e.getSource() == updateButton) {
            int selectedRow = dataTable.getSelectedRow();
            if (selectedRow != -1) {
                String id = (String) dataTable.getValueAt(selectedRow, 0);
                String name = nameField.getText();
                String type = (String) typeBox.getSelectedItem();
                // TODO: update user with id
            }
        } else if (e.getSource() == queryButton) {
            // TODO: query all users and update the table
        }
    }

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

注意：这个示例只是一个简单的模板，实际情况下需要根据具体需求进行修改和完善。另外，为了保证安全性，应该对用户输入进行合法性检查，并且在数据库操作时应该使用参数化查询防止SQL注入攻击。