manoj.java

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

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;
    }

    @Override
    public String toString() {
        return name + " - " + phone;
    }
}

public class ContactManager {
    private static ArrayList<Contact> contacts = new ArrayList<>();
    private static Scanner scanner = new Scanner(System.in);

    public static void main(String[] args) {
        boolean running = true;
        while (running) {
            System.out.println("\nContact Manager");
            System.out.println("1. Add Contact");
            System.out.println("2. List Contacts");
            System.out.println("3. Search Contact");
            System.out.println("4. Exit");
            System.out.print("Choose an option: ");

            int choice = scanner.nextInt();
            scanner.nextLine(); // consume newline

            switch (choice) {
                case 1:
                    addContact();
                    break;
                case 2:
                    listContacts();
                    break;
                case 3:
                    searchContact();
                    break;
                case 4:
                    running = false;
                    System.out.println("Exiting...");
                    break;
                default:
                    System.out.println("Invalid option, try again.");
            }
        }
    }

    private static void addContact() {
        System.out.print("Enter name: ");
        String name = scanner.nextLine();
        System.out.print("Enter phone: ");
        String phone = scanner.nextLine();

        contacts.add(new Contact(name, phone));
        System.out.println("Contact added.");
    }

    private static void listContacts() {
        if (contacts.isEmpty()) {
            System.out.println("No contacts found.");
            return;
        }
        System.out.println("Contacts:");
        for (Contact c : contacts) {
            System.out.println(c);
        }
    }

    private static void searchContact() {
        System.out.print("Enter name to search: ");
        String searchName = scanner.nextLine();
        boolean found = false;
        for (Contact c : contacts) {
            if (c.getName().equalsIgnoreCase(searchName)) {
                System.out.println("Found: " + c);
                found = true;
            }
        }
        if (!found) {
            System.out.println("No contact found with that name.");
        }
    }
}