Dive deep into how OOP works in Java. Learn to write cleaner, more reusable code using OOP principles.

Java for Programmers

Object Oriented Programming (OOP) is a programming paradigm popular for large and complex systems. In this. module, dive deep into how OOP works in Java. Learn to write cleaner, more reusable code using OOP principles.

Object Oriented Programming

## Problem Statement

There is a `Book` class which has an abstract method `getDetails()`, a parameterized constructor, and three protected fields: 

- name
- author
- price


Write a `MyBook` class that inherits from the `Book` class and has a parameterized constructor taking these parameters:
- **String title**
- **String author**
- **String price**.

Implement the `Book` class `getdetails()` method in the `MyBook` class so that it returns the `MyBook` details.



### Input
    Calls the constructor by passing name, author, and price.
    Calls the `getDetails()` method to return the details of a book.

### Output
    Returns the details of a book.


### Sample Input

```Java
Book myBook = new MyBook("Harry Potter", "J.k. Rowling", "100");
```

### Sample Output

```Java
"Harry Potter, J.k. Rowling, 100"
```



# Problem Statement

There is a `Book` class which has an abstract method `getDetails()`, a parameterized constructor, and three protected fields: 

- name
- author
- price


Write a `MyBook` class that inherits from the `Book` class and has a parameterized constructor taking these parameters:
- **String title**
- **String author**
- **String price**.

Implement the `Book` class `getdetails()` method in the `MyBook` class so that it returns the `MyBook` details.



## Input
    Calls the constructor by passing name, author, and price.
    Calls the `getDetails()` method to return the details of a book.

## Output
    Returns the details of a book.


## Sample Input

```Java
Book myBook = new MyBook("Harry Potter", "J.k. Rowling", "100");
```

## Sample Output

```Java
"Harry Potter, J.k. Rowling, 100"
```



Can you implement an abstract method of a base class? A solution is placed in the "solution" section to help you, but we would suggest you try to solve it on your own first.

Classes and Objects

Data Hiding

Inheritance

Polymorphism

Abstract Classes and Interfaces

Aggregation and Composition

Challenge 1: Implement an Abstract Method in a Base Class

Problem Statement