用java写一个通讯录管理代码

好的，以下是一个简单的通讯录管理代码示例：

import java.util.ArrayList;
import java.util.Scanner;

public class ContactManager {
    private ArrayList<Contact> contacts;

    public ContactManager() {
        contacts = new ArrayList<>();
    }

    public void addContact(Contact contact) {
        contacts.add(contact);
    }

    public void removeContact(Contact contact) {
        contacts.remove(contact);
    }

    public void printContacts() {
        for (Contact contact : contacts) {
            System.out.println(contact);
        }
    }

    public static void main(String[] args) {
        ContactManager manager = new ContactManager();
        Scanner input = new Scanner(System.in);
        String name, phone, email;
        int choice;
        do {
            System.out.println("1. Add contact");
            System.out.println("2. Remove contact");
            System.out.println("3. Print contacts");
            System.out.println("4. Exit");
            System.out.print("Enter your choice: ");
            choice = input.nextInt();
            switch (choice) {
                case 1:
                    System.out.print("Enter name: ");
                    name = input.next();
                    System.out.print("Enter phone number: ");
                    phone = input.next();
                    System.out.print("Enter email: ");
                    email = input.next();
                    manager.addContact(new Contact(name, phone, email));
                    break;
                case 2:
                    System.out.print("Enter name: ");
                    name = input.next();
                    for (Contact contact : manager.contacts) {
                        if (contact.getName().equals(name)) {
                            manager.removeContact(contact);
                            break;
                        }
                    }
                    break;
                case 3:
                    manager.printContacts();
                    break;
                case 4:
                    break;
                default:
                    System.out.println("Invalid choice");
            }
        } while (choice != 4);
    }
}

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;
    }

    @Override
    public String toString() {
        return "Name: " + name + ", Phone: " + phone + ", Email: " + email;
    }
}

这个程序可以让用户添加、删除和打印联系人信息。每个联系人都有一个名字、电话号码和电子邮件地址。用户可以输入选项来执行相应的操作。以上仅供参考，具体实现还需要根据需求进行修改和完善。