Java图形化界面用户管理系统代码

以下是一个简单的Java图形化界面用户管理系统的代码示例：

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

public class UserManagementSystem extends JFrame implements ActionListener {
    private JLabel titleLabel, idLabel, nameLabel, ageLabel, genderLabel;
    private JTextField idTextField, nameTextField, ageTextField;
    private JComboBox<String> genderComboBox;
    private JButton addButton, deleteButton, updateButton, clearButton, exitButton;
    private JTable table;
    private DefaultTableModel model;
    private JScrollPane scrollPane;

    private ArrayList<User> userList;

    public UserManagementSystem() {
        userList = new ArrayList<User>();

        titleLabel = new JLabel("User Management System");
        titleLabel.setFont(new Font("Arial", Font.BOLD, 20));
        titleLabel.setBounds(200, 20, 300, 30);

        idLabel = new JLabel("ID:");
        idLabel.setBounds(50, 70, 50, 30);

        idTextField = new JTextField();
        idTextField.setBounds(100, 70, 150, 30);

        nameLabel = new JLabel("Name:");
        nameLabel.setBounds(50, 110, 50, 30);

        nameTextField = new JTextField();
        nameTextField.setBounds(100, 110, 150, 30);

        ageLabel = new JLabel("Age:");
        ageLabel.setBounds(50, 150, 50, 30);

        ageTextField = new JTextField();
        ageTextField.setBounds(100, 150, 150, 30);

        genderLabel = new JLabel("Gender:");
        genderLabel.setBounds(50, 190, 50, 30);

        String[] gender = {"Male", "Female"};
        genderComboBox = new JComboBox<String>(gender);
        genderComboBox.setBounds(100, 190, 150, 30);

        addButton = new JButton("Add");
        addButton.setBounds(300, 70, 80, 30);
        addButton.addActionListener(this);

        deleteButton = new JButton("Delete");
        deleteButton.setBounds(300, 110, 80, 30);
        deleteButton.addActionListener(this);

        updateButton = new JButton("Update");
        updateButton.setBounds(300, 150, 80, 30);
        updateButton.addActionListener(this);

        clearButton = new JButton("Clear");
        clearButton.setBounds(300, 190, 80, 30);
        clearButton.addActionListener(this);

        exitButton = new JButton("Exit");
        exitButton.setBounds(400, 230, 80, 30);
        exitButton.addActionListener(this);

        String[] columnNames = {"ID", "Name", "Age", "Gender"};
        model = new DefaultTableModel(columnNames, 0);
        table = new JTable(model);
        scrollPane = new JScrollPane(table);
        scrollPane.setBounds(50, 270, 500, 200);

        getContentPane().setLayout(null);
        getContentPane().add(titleLabel);
        getContentPane().add(idLabel);
        getContentPane().add(idTextField);
        getContentPane().add(nameLabel);
        getContentPane().add(nameTextField);
        getContentPane().add(ageLabel);
        getContentPane().add(ageTextField);
        getContentPane().add(genderLabel);
        getContentPane().add(genderComboBox);
        getContentPane().add(addButton);
        getContentPane().add(deleteButton);
        getContentPane().add(updateButton);
        getContentPane().add(clearButton);
        getContentPane().add(exitButton);
        getContentPane().add(scrollPane);

        setTitle("User Management System");
        setSize(600, 550);
        setVisible(true);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    }

    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == addButton) {
            String id = idTextField.getText();
            String name = nameTextField.getText();
            int age = Integer.parseInt(ageTextField.getText());
            String gender = genderComboBox.getSelectedItem().toString();

            User user = new User(id, name, age, gender);
            userList.add(user);

            Object[] row = new Object[4];
            row[0] = id;
            row[1] = name;
            row[2] = age;
            row[3] = gender;
            model.addRow(row);

            idTextField.setText("");
            nameTextField.setText("");
            ageTextField.setText("");
        } else if (e.getSource() == deleteButton) {
            int row = table.getSelectedRow();
            if (row >= 0) {
                String id = model.getValueAt(row, 0).toString();
                for (User user : userList) {
                    if (user.getId().equals(id)) {
                        userList.remove(user);
                        break;
                    }
                }
                model.removeRow(row);
            } else {
                JOptionPane.showMessageDialog(this, "Select a row to delete.");
            }
        } else if (e.getSource() == updateButton) {
            int row = table.getSelectedRow();
            if (row >= 0) {
                String id = idTextField.getText();
                String name = nameTextField.getText();
                int age = Integer.parseInt(ageTextField.getText());
                String gender = genderComboBox.getSelectedItem().toString();

                User user = new User(id, name, age, gender);
                userList.set(row, user);

                model.setValueAt(id, row, 0);
                model.setValueAt(name, row, 1);
                model.setValueAt(age, row, 2);
                model.setValueAt(gender, row, 3);

                idTextField.setText("");
                nameTextField.setText("");
                ageTextField.setText("");
            } else {
                JOptionPane.showMessageDialog(this, "Select a row to update.");
            }
        } else if (e.getSource() == clearButton) {
            idTextField.setText("");
            nameTextField.setText("");
            ageTextField.setText("");
        } else if (e.getSource() == exitButton) {
            System.exit(0);
        }
    }

    public static void main(String[] args) {
        UserManagementSystem system = new UserManagementSystem();
    }
}

class User {
    private String id;
    private String name;
    private int age;
    private String gender;

    public User(String id, String name, int age, String gender) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.gender = gender;
    }

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public int getAge() {
        return age;
    }

    public String getGender() {
        return gender;
    }
}

这个程序使用了Swing和AWT库来创建用户管理系统的图形化界面。用户可以使用图形用户界面添加、删除、更新和清空用户信息。程序还包括一个用户类，用于存储用户信息。