Question

Create a Java program application that creates an ArrayList that holds String objects. It needs to prompt the user to enter the names of friends, which are then put into the ArrayList; allow the user to keep adding names until they enter "q" to quit.

After input is complete, display a numbered list of all friends in the list and prompt the user to enter the number of the friend they wish to delete. After deleting that entry, output the new list of friends.

Answer 1

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

public class FriendList {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        ArrayList<String> friends = new ArrayList<>();
        String name;
        while (true) {
            System.out.print("Enter your friend's name(q to exit): ");
            name = in.nextLine();
            if(name.equals("q")) {
                break;
            }
            friends.add(name);
        }
        System.out.println("\nFriends");
        for(int i = 0; i < friends.size(); i++) {
            System.out.println(i + ": " + friends.get(i));
        }
        System.out.print("\nEnter friend number to delete: ");
        int number = in.nextInt();
        friends.remove(number);
        System.out.println("\nFriends");
        for(int i = 0; i < friends.size(); i++) {
            System.out.println(i + ": " + friends.get(i));
        }
    }
}