Tangled JAVA elaborately

Inheritance in Java Classes in Java exist in a hierarchy. A class in Java can be declared as a subclass of another class using the extends keyword. A subclass inherits variables and methods from its superclass and can use them as if they were declared within the subclass itself: Important terminology in inheritance Super Class: The class whose features are inherited is known as super class(or a base class or a paren class). Sub Class: The class that inherits the other class is known as sub class(or a derived class, extended class, or child class). The subclass can add its own fields and methods in addition to the superclass fields and methods. Reusability: Inheritance supports the concept of “reusability”, i.e. when we want to create a new class and there is already a class that includes some of the code that we want, we can derive our new class from the existing class. By doing this, we are reusing the fields and methods of the existing class. Inheritance repre...

In this article we will learn about OOP ( Object oriented programing ) concepts. If you want to learn further lessons about objects, classes, inheritance, polymorphism, how objects interact with each other then you must read these lesson carefully. There are total 7 core OOPs concepts.  1. Abstraction  Abstraction is the concept of hiding the internal details and describing things in simple terms. For example, a method that adds two integers. The method internal processing is hidden from outer world. There are many ways to achieve abstraction in object oriented programming, such as encapsulation and inheritance. A java program is also a great example of abstraction. Here java takes care of converting simple statements to machine language and hides the inner implementation details from outer world.  2. Encapsulation Encapsulation is the technique used to implement abstraction in object oriented programming. Encapsulation is used for access restriction ...