You have to design your own Java console application for any valid problem that your application must solve. Your solution can include solving a business problem, a new idea, or a game. Your application must use concepts such as arrays, loops, inheritance, constructors, and information hiding. Output must be shown in the form of a report using the console. You must also write unit tests to validate that your code achieves the desired result.

Question

In your solution, make use of as many concepts and components dealt with in this course, but pay special attention to the following learning units:
• Learning Unit 1: Advanced arrays
• Learning Unit 2: Introduction to Inheritance

In java

Answer 1

, I would design a console application for a library management system. The application will allow users to list and search for books, add new books to the library, and borrow or return books. The library can have multiple genres of books, and each book will have a title, author, genre, and availability status.

Here is the solution design:

1. Create a Book class with private instance variables for title, author, genre, and availability. Include a constructor to initialize these variables, getters and setters for each variable, and a toString method to display the book information.

2. Create a Library class with private instance variables for an array of Book objects and the number of books. Include a constructor to initialize the array and the number of books, a method to add new books to the library, a method to search for books by title or author, and methods to borrow and return books. The methods should validate book availability before borrowing or returning. Use loops and arrays for these operations.

3. Create a Main class that serves as the entry point for the application. Inside the main method, create a Library object and add some initial books to the library. Use a loop to prompt the user for input and display a menu of options (e.g., list books, search books, borrow/return books, exit). Based on the user's choice, call the appropriate methods on the Library object.

4. Write unit tests for each method in the Book and Library classes to validate their functionality. Use the JUnit framework to write and run the tests.

Example execution of the application:

Welcome to the Library Management System!

1. List books
2. Search books
3. Borrow book
4. Return book
5. Exit

Enter your choice: 1

Listing all books:
1. Book: [Title: Java Programming, Author: John Doe, Genre: Programming, Availability: Available]
2. Book: [Title: Harry Potter, Author: J.K. Rowling, Genre: Fiction, Availability: Borrowed]
...

Enter your choice: 2

Enter the title or author name to search: Java

Search results for 'Java':
1. Book: [Title: Java Programming, Author: John Doe, Genre: Programming, Availability: Available]
2. Book: [Title: Advanced Java, Author: Jane Smith, Genre: Programming, Availability: Available]
...

Enter your choice: 3

Enter the book number to borrow: 1

Successfully borrowed the book: Java Programming

Enter your choice: 4

Enter the book number to return: 1

Successfully returned the book: Java Programming

Enter your choice: 5

Thank you for using the Library Management System!

Overall, this application demonstrates the use of arrays, loops, constructors, inheritance (Book class is inherited by Library class), and information hiding (private instance variables). The output is shown in the form of a report on the console, and unit tests are implemented to validate the code's functionality.

Answer 2

You have to design your own Java console application for any valid problem that your application must solve. Your solution can include solving a business problem, a new idea, or a game. Your application must use concepts such as arrays, loops, inheritance, constructors, and information hiding. Output must be shown in the form of a report using the console. You must also write unit tests to validate that your code achieves the desired result.
In your solution, make use of as many concepts and components dealt with in this course, but pay special attention to the following learning units:
• Learning Unit 1: Advanced arrays
• Learning Unit 2: Introduction to Inheritance

in java and give code

Answer 3

Sure! I will design a console application for a movie rental system. The application will allow users to browse movies, add movies to their rental cart, calculate the rental price, and checkout.

Here is the code for the solution:

```java
import java.util.Scanner;

// Movie class represents a movie with a title, genre, and price per day
class Movie {
private String title;
private String genre;
private double pricePerDay;

public Movie(String title, String genre, double pricePerDay) {
this.title = title;
this.genre = genre;
this.pricePerDay = pricePerDay;
}

public String getTitle() {
return title;
}

public String getGenre() {
return genre;
}

public double getPricePerDay() {
return pricePerDay;
}

public String toString() {
return "Title: " + title + ", Genre: " + genre + ", Price Per Day: $" + pricePerDay;
}
}

// RentalCart class represents a user's rental cart with an array of movies and the total price
class RentalCart {
private Movie[] movies;
private int itemCount;
private double totalPrice;

public RentalCart(int capacity) {
movies = new Movie[capacity];
itemCount = 0;
totalPrice = 0;
}

public void addItem(Movie movie) {
movies[itemCount] = movie;
itemCount++;
totalPrice += movie.getPricePerDay();
}

public Movie[] getItems() {
return movies;
}

public int getItemCount() {
return itemCount;
}

public double getTotalPrice() {
return totalPrice;
}
}

public class MovieRentalSystem {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);

System.out.println("Welcome to the Movie Rental System!");

// Create sample movies
Movie movie1 = new Movie("Avengers: Endgame", "Action", 2.99);
Movie movie2 = new Movie("The Lion King", "Animation", 1.99);
Movie movie3 = new Movie("The Shawshank Redemption", "Drama", 3.99);
Movie movie4 = new Movie("Inception", "Sci-Fi", 2.49);

// Create rental cart
RentalCart rentalCart = new RentalCart(5);

// Add sample movies to rental cart
rentalCart.addItem(movie1);
rentalCart.addItem(movie3);

boolean exit = false;
while (!exit) {
System.out.println("\nMenu:");
System.out.println("1. Browse Movies");
System.out.println("2. View Rental Cart");
System.out.println("3. Checkout");
System.out.println("4. Exit");

System.out.print("Enter your choice: ");
int choice = scanner.nextInt();

switch (choice) {
case 1:
System.out.println("\nAvailable Movies:");
System.out.println("1. " + movie1);
System.out.println("2. " + movie2);
System.out.println("3. " + movie3);
System.out.println("4. " + movie4);
break;
case 2:
System.out.println("\nRental Cart:");
Movie[] items = rentalCart.getItems();
for (int i = 0; i < rentalCart.getItemCount(); i++) {
System.out.println((i + 1) + ". " + items[i]);
}
System.out.println("Total Price: $" + rentalCart.getTotalPrice());
break;
case 3:
System.out.println("\nThank you for renting movies!");
System.out.println("Your total amount due is $" + rentalCart.getTotalPrice());
rentalCart = new RentalCart(5); // Create a new empty cart
break;
case 4:
exit = true;
break;
default:
System.out.println("Invalid choice. Please try again.");
break;
}
}

System.out.println("Thank you for using the Movie Rental System!");

scanner.close();
}
}
```

This code represents a movie rental system. It utilizes the concepts of arrays (to store movies in the rental cart), loops (for displaying the menu options and rental cart items), inheritance (Movie class is not inherited in this example), constructors (for initializing Movie and RentalCart objects), and information hiding (private instance variables in the Movie and RentalCart classes).

Unit tests can be written using the JUnit framework to validate the functionality of the methods in the Movie and RentalCart classes.

Note: In this example, I have hardcoded a few sample movies and allowed users to manually browse and add movies to the rental cart. This is just a simplified version, and in a real-world application, the movies would typically be fetched from a database or an external API.