FAQs of Abstract class

1. What is an abstract class in Java?

An abstract class in Java is a class that can not be initiated on its own but can be used as a subclass by another class.

2. What is the abstract class purpose?

The main purpose of the abstract class is to create a base class from which many other classes can be derived.

3. What is the main advantage of abstract class?

An abstract class provides the provides of data hiding in Java.

4. Why abstract class is faster than interface?

An abstract class is faster than an interface because the interface involves a search before calling any overridden method in Java whereas abstract class can be directly used. 

In Java, abstract class is declared with the abstract keyword. It may have both abstract and non-abstract methods(methods with bodies). An abstract is a Java modifier applicable for classes and methods in Java but not for Variables. In this article, we will learn the use of abstract classes in Java.