Abstract class in java can’t be instantiated

Because that would contravene their whole purpose.

Abstract classes, by design, are not complete or functional. They are meant to serve as a base from which complete classes can be built, by aggregating the common members and methods that they all will need into an abstract base class, and then allowing the inheriting classes to fill out the necessary

Abstract Class in Java

Abstract class in Java is similar to interface except that it can contain default method implementation. An abstract class can have an abstract method without body and it can have methods with implementation also.

Explain Function Overloading and Method Overloading in Java

When in a class, we have more then one method with similar name but with different type signatures i.e. with different number of parameters or with different types of parameters, then we say that the method is overloaded. Compiler will recognize which method to execute on the basis of the type and

What is Abstraction in Java? Abstract Class or Interface

Abstraction in Java: The words "data abstraction" and "information hiding" are generally used interchangeably. The two terms mean the same thing in this context. Abstraction is a simple representation of a complicated situation. It is a technique where we hide irrelevant details and represent only the essential aspects of a context so that one can focus on features one is interested; It helps to deal a complex system by concentrating on the essential features only. It is designed to make