DogDriver.java

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

public class DogDriver {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        String username;
        Dog chosenDog;
        String yesOrNo;
        ArrayList<Dog> arrayOfDogs;

        do {
            arrayOfDogs = createListOfDogs();
            username = getUserName(scanner);
            chosenDog = chooseDog(scanner, arrayOfDogs);

            while (!(arrayOfDogs.contains(chosenDog))) {
                System.out.println("The dog you chose is not on the list. Choose again.");
                //username = getUserName(scanner);
                chosenDog = chooseDog(scanner, arrayOfDogs);
            }

            assert chosenDog != null;
            chosenDog.showInfo();
            System.out.println("Adopt " + chosenDog.getName() + "?");
            yesOrNo = scanner.nextLine();

            if (yesOrNo.equalsIgnoreCase("Yes")) {
                chosenDog.setOwner(username); // Set owner's Name from "None" to user's name
                System.out.println("Updated Information:");
                chosenDog.showInfo(); // Print the info again, this time with the correct owner's name
            }
        } while (yesOrNo.equalsIgnoreCase("no"));
        // if the dog is not to be adopted, go back to the very beginning...
    }

    private static String getUserName(Scanner s) {
        System.out.print("What is your name? ");
        String name = s.nextLine();
        return name;
    }

    private static Dog chooseDog(Scanner s, ArrayList<Dog> list) {
        System.out.println("Here are dogs up for adoption: ");
        for (Dog dog : list) {
            System.out.println(dog.getName());
        }

        System.out.print("\nType the name of the dog you chose: ");
        String nameOfDog = s.nextLine();

        for (Dog dog : list) {
            if (dog.getName().equalsIgnoreCase(nameOfDog)) {
                return dog;
            }
        }
        return null;
    }

    private static ArrayList<Dog> createListOfDogs() {
        // Create an arraylist of Dog objects
        ArrayList<Dog> list = new ArrayList <>();

        // Create Dog objects to be added to the arraylist
        Dog dog1 = new Dog("Oscar","None");
        Dog dog2 = new Dog("Bear","None");
        Dog dog3 = new Dog("Charlie","None");
        Dog dog4 = new Dog("Nico","None");
        Dog dog5 = new Dog("Sheeba","None");

        // Add Dog objects to arraylist
        list.add(dog1);
        list.add(dog2);
        list.add(dog3);
        list.add(dog4);
        list.add(dog5);

        return list;
    }

}