Explore the fundamentals of OOP in Java. Gain insights into inheritance, polymorphism, and more to write clean, modular, reusable code through interactive exercises and practical challenges.

cpp17.tar.gz

Object-oriented programming (OOP) has been around for decades. As the original object-oriented language, Java is a mainstay in the world of computer programming. 

Having a foundation in OOP Java concepts will allow you to write cleaner, more modular, and more reusable code, as well as make it easier for you to understand the codebases of different companies you might be interested in joining.

Starting with the basics and reviewing complex topics like inheritance and polymorphism, this course is filled with illustrations, exercises, quizzes, and hands-on challenges. You’ll walk away with an understanding of classes and objects behavior and be able to easily create simple, efficient, reusable and secure code.

Learn Object-Oriented Programming in Java

The attributes of a class can be divided into the following two parts:

The attributes of a class can be divided into the following two parts:

What is the output of the code below?
``` Java
class Score {
  private int num;
  public Score() {
    this.num = num;
  }
  
  public int getNum(){
    return this.num;
  }
}

class Demo {
  public static void main(String args[]) {
    Score sc = new Score(5);
    System.out.println(sc.getNum());
  }
}

```

What is the output of the code below?
<pre><code class="language-Java">class Score {
 private int num;
 public Score() {
 this.num = num;
 }
 
 public int getNum(){
 return this.num;
 }
}

class Demo {
 public static void main(String args[]) {
 Score sc = new Score(5);
 System.out.println(sc.getNum());
 }
}

</code></pre>

If you don't define any constructor, the Java compiler will insert a default constructor for you.

If you don’t define any constructor, the Java compiler will insert a default constructor for you.

Member functions are usually kept:

A short quiz to test your understanding of classes in Java

Introduction to Object-Oriented Programming

Classes and Objects

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Object Oriented Programming in Java - Exam I

Inheritance

Polymorphism

Abstract Classes and Interfaces

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Object Oriented Programming in Java - Exam II

Quiz