Java通过图形页面实现通讯录管理系统代码

以下是一个简单的 Java 图形页面通讯录管理系统的代码示例：

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

public class AddressBookGUI extends JFrame implements ActionListener {

    private static final long serialVersionUID = 1L;
    private JTextField nameField, phoneField, emailField;
    private JTextArea outputArea;
    private JButton addButton, findButton, listButton;
    private ArrayList<Contact> contacts = new ArrayList<Contact>();

    public AddressBookGUI() {
        super("Address Book");
        setLayout(new BorderLayout());

        JPanel inputPanel = new JPanel(new GridLayout(3, 2));
        inputPanel.add(new JLabel("Name:"));
        nameField = new JTextField("");
        inputPanel.add(nameField);
        inputPanel.add(new JLabel("Phone:"));
        phoneField = new JTextField("");
        inputPanel.add(phoneField);
        inputPanel.add(new JLabel("Email:"));
        emailField = new JTextField("");
        inputPanel.add(emailField);
        add(inputPanel, BorderLayout.NORTH);

        JPanel buttonPanel = new JPanel(new FlowLayout());
        addButton = new JButton("Add");
        addButton.addActionListener(this);
        buttonPanel.add(addButton);
        findButton = new JButton("Find");
        findButton.addActionListener(this);
        buttonPanel.add(findButton);
        listButton = new JButton("List");
        listButton.addActionListener(this);
        buttonPanel.add(listButton);
        add(buttonPanel, BorderLayout.CENTER);

        outputArea = new JTextArea();
        add(new JScrollPane(outputArea), BorderLayout.SOUTH);

        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setSize(400, 300);
        setVisible(true);
    }

    public void actionPerformed(ActionEvent event) {
        if (event.getSource() == addButton) {
            String name = nameField.getText();
            String phone = phoneField.getText();
            String email = emailField.getText();
            Contact contact = new Contact(name, phone, email);
            contacts.add(contact);
            outputArea.append("Contact added: " + contact + "\n");
            nameField.setText("");
            phoneField.setText("");
            emailField.setText("");
        }
        else if (event.getSource() == findButton) {
            String name = nameField.getText();
            for (Contact contact : contacts) {
                if (contact.getName().equals(name)) {
                    outputArea.append(contact + "\n");
                    return;
                }
            }
            outputArea.append("Contact not found.\n");
        }
        else if (event.getSource() == listButton) {
            outputArea.setText("");
            for (Contact contact : contacts) {
                outputArea.append(contact + "\n");
            }
        }
    }

    public static void main(String[] args) {
        AddressBookGUI addressBook = new AddressBookGUI();
    }
}

class Contact {

    private String name;
    private String phone;
    private String email;

    public Contact(String name, String phone, String email) {
        this.name = name;
        this.phone = phone;
        this.email = email;
    }

    public String getName() {
        return name;
    }

    public String getPhone() {
        return phone;
    }

    public String getEmail() {
        return email;
    }

    public String toString() {
        return name + " " + phone + " " + email;
    }
}

这个程序创建了一个简单的图形用户界面，包含了输入联系人信息的文本框和添加、查找和列出联系人的按钮。联系人信息保存在一个 Contact 类的对象中，这个类包含了名字、电话号码和电子邮件地址。添加联系人时，程序将创建一个新的 Contact 对象，并将其添加到 contacts 列表中。查找联系人时，程序将在 contacts 列表中查找具有相同名字的 Contact 对象。列出所有联系人时，程序将遍历整个 contacts 列表，并将每个 Contact 对象的字符串表示添加到输出区域中。