假设你叫林大棉，你需要用JAVA程序写出通讯录

好的，我可以帮你编写一个基本的通讯录程序。这个程序可以实现添加联系人、查找联系人、删除联系人、显示所有联系人等基本功能。以下是程序的代码：

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

public class ContactList {
    private ArrayList<Contact> contacts;

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

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

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

    public void displayAllContacts() {
        System.out.println("Contact List:");
        for (Contact c : contacts) {
            System.out.println(c);
        }
    }

    public Contact findContact(String name) {
        for (Contact c : contacts) {
            if (c.getName().equals(name)) {
                return c;
            }
        }
        return null;
    }

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        ContactList cl = new ContactList();
        while (true) {
            System.out.println("\nWhat would you like to do?");
            System.out.println("1 - Add a contact");
            System.out.println("2 - Remove a contact");
            System.out.println("3 - Display all contacts");
            System.out.println("4 - Find a contact");
            System.out.println("5 - Quit");
            int choice = input.nextInt();
            input.nextLine();

            switch (choice) {
                case 1:
                    System.out.print("Enter name: ");
                    String name = input.nextLine();
                    System.out.print("Enter phone number: ");
                    String phone = input.nextLine();
                    System.out.print("Enter email: ");
                    String email = input.nextLine();
                    Contact c = new Contact(name, phone, email);
                    cl.addContact(c);
                    System.out.println("Contact added.");
                    break;
                case 2:
                    System.out.print("Enter name: ");
                    String name2 = input.nextLine();
                    Contact c2 = cl.findContact(name2);
                    if (c2 != null) {
                        cl.removeContact(c2);
                        System.out.println("Contact removed.");
                    } else {
                        System.out.println("Contact not found.");
                    }
                    break;
                case 3:
                    cl.displayAllContacts();
                    break;
                case 4:
                    System.out.print("Enter name: ");
                    String name3 = input.nextLine();
                    Contact c3 = cl.findContact(name3);
                    if (c3 != null) {
                        System.out.println(c3);
                    } else {
                        System.out.println("Contact not found.");
                    }
                    break;
                case 5:
                    System.out.println("Goodbye!");
                    System.exit(0);
                default:
                    System.out.println("Invalid choice.");
                    break;
            }
        }
    }
}

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;
    }
}

希望能够帮助到你！