Java如何创建一个简单的通讯录管理系统

public class Contact {
    private String name;
    private String phone;
    private String email;
<pre class='brush:java;toolbar:false;'>public Contact(String name, String phone, String email) {
    this.name = name;
    this.phone = phone;
    this.email = email;
}

// Getter 和 Setter 方法
public String getName() { return name; }
public void setName(String name) { this.name = name; }

public String getPhone() { return phone; }
public void setPhone(String phone) { this.phone = phone; }

public String getEmail() { return email; }
public void setEmail(String email) { this.email = email; }

@Override
public String toString() {
    return "姓名: " + name + ", 电话: " + phone + ", 邮箱: " + email;
}

import java.util.ArrayList;
import java.util.Scanner;
<p>public class AddressBook {
private ArrayList<Contact> contacts;
private Scanner scanner;</p><pre class='brush:java;toolbar:false;'>public AddressBook() {
    contacts = new ArrayList<>();
    scanner = new Scanner(System.in);
}

// 添加联系人
public void addContact() {
    System.out.print("输入姓名: ");
    String name = scanner.nextLine();
    System.out.print("输入电话: ");
    String phone = scanner.nextLine();
    System.out.print("输入邮箱: ");
    String email = scanner.nextLine();
    contacts.add(new Contact(name, phone, email));
    System.out.println("联系人添加成功！");
}

// 查看所有联系人
public void viewContacts() {
    if (contacts.isEmpty()) {
        System.out.println("通讯录为空！");
    } else {
        for (int i = 0; i < contacts.size(); i++) {
            System.out.println((i + 1) + ". " + contacts.get(i));
        }
    }
}

// 根据姓名查找联系人
public Contact findContact(String name) {
    for (Contact c : contacts) {
        if (c.getName().equalsIgnoreCase(name)) {
            return c;
        }
    }
    return null;
}

// 修改联系人信息
public void editContact() {
    System.out.print("输入要修改的联系人姓名: ");
    String name = scanner.nextLine();
    Contact contact = findContact(name);
    if (contact != null) {
        System.out.print("新电话: ");
        String phone = scanner.nextLine();
        System.out.print("新邮箱: ");
        String email = scanner.nextLine();
        contact.setPhone(phone);
        contact.setEmail(email);
        System.out.println("修改成功！");
    } else {
        System.out.println("未找到该联系人！");
    }
}

// 删除联系人
public void deleteContact() {
    System.out.print("输入要删除的联系人姓名: ");
    String name = scanner.nextLine();
    Contact contact = findContact(name);
    if (contact != null) {
        contacts.remove(contact);
        System.out.println("删除成功！");
    } else {
        System.out.println("未找到该联系人！");
    }
}

// 主菜单
public void showMenu() {
    while (true) {
        System.out.println("\n--- 通讯录管理系统 ---");
        System.out.println("1. 添加联系人");
        System.out.println("2. 查看所有联系人");
        System.out.println("3. 查找联系人");
        System.out.println("4. 修改联系人");
        System.out.println("5. 删除联系人");
        System.out.println("6. 退出");
        System.out.print("请选择操作: ");
        String choice = scanner.nextLine();

        switch (choice) {
            case "1":
                addContact();
                break;
            case "2":
                viewContacts();
                break;
            case "3":
                System.out.print("输入姓名查找: ");
                String name = scanner.nextLine();
                Contact c = findContact(name);
                if (c != null) {
                    System.out.println("找到: " + c);
                } else {
                    System.out.println("未找到该联系人！");
                }
                break;
            case "4":
                editContact();
                break;
            case "5":
                deleteContact();
                break;
            case "6":
                System.out.println("再见！");
                return;
            default:
                System.out.println("无效选择，请重试。");
        }
    }
}

public class Main {
    public static void main(String[] args) {
        AddressBook book = new AddressBook();
        book.showMenu();
    }
}