java通讯录管理系统

好的，下面是一个简单的 Java 通讯录管理系统的示例代码，你可以根据需要进行修改和完善：

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(int index) {
        contacts.remove(index);
    }

    public Contact getContact(int index) {
        return contacts.get(index);
    }

    public int getContactCount() {
        return contacts.size();
    }

    public ArrayList<Contact> searchContacts(String keyword) {
        ArrayList<Contact> result = new ArrayList<>();
        for (Contact contact : contacts) {
            if (contact.getName().contains(keyword) || contact.getPhone().contains(keyword)) {
                result.add(contact);
            }
        }
        return result;
    }

    public static void main(String[] args) {
        ContactManager manager = new ContactManager();
        Scanner scanner = new Scanner(System.in);
        int choice = 0;
        do {
            System.out.println("1. Add contact");
            System.out.println("2. Remove contact");
            System.out.println("3. Search contacts");
            System.out.println("4. Exit");
            System.out.print("Enter your choice: ");
            choice = scanner.nextInt();
            scanner.nextLine();
            switch (choice) {
                case 1:
                    System.out.print("Enter name: ");
                    String name = scanner.nextLine();
                    System.out.print("Enter phone: ");
                    String phone = scanner.nextLine();
                    Contact contact = new Contact(name, phone);
                    manager.addContact(contact);
                    System.out.println("Contact added successfully!");
                    break;
                case 2:
                    System.out.print("Enter index: ");
                    int index = scanner.nextInt();
                    manager.removeContact(index);
                    System.out.println("Contact removed successfully!");
                    break;
                case 3:
                    System.out.print("Enter keyword: ");
                    String keyword = scanner.nextLine();
                    ArrayList<Contact> result = manager.searchContacts(keyword);
                    for (int i = 0; i < result.size(); i++) {
                        Contact c = result.get(i);
                        System.out.println((i + 1) + ". " + c.getName() + " " + c.getPhone());
                    }
                    break;
                case 4:
                    System.out.println("Goodbye!");
                    break;
                default:
                    System.out.println("Invalid choice!");
                    break;
            }
        } while (choice != 4);
        scanner.close();
    }
}

class Contact {
    private String name;
    private String phone;

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

    public String getName() {
        return name;
    }

    public String getPhone() {
        return phone;
    }
}

这个程序实现了添加联系人、删除联系人和搜索联系人的功能。你可以根据需要进行修改和扩展。