What is the use of abstract class in Java?
Hereof, what is the purpose of abstract class in Java?
A Java abstract class is a class which cannot be instantiated, meaning you cannot create new instances of an abstract class. The purpose of an abstract class is to function as a base for subclasses.
Secondly, what is abstract class in Java with example? A class that is declared using “abstract” keyword is known as abstract class. It can have abstract methods(methods without body) as well as concrete methods (regular methods with body). An abstract class can not be instantiated, which means you are not allowed to create an object of it.
Similarly, you may ask, what is the use of interface and abstract class in Java?
An abstract class permits you to make functionality that subclasses can implement or override whereas an interface only permits you to state functionality but not to implement it. A class can extend only one abstract class while a class can implement multiple interfaces.
Where do we use interface and abstract class in Java?
abstract keyword is used to create an abstract class and it can be used with methods also whereas interface keyword is used to create interface and it can't be used with methods. Abstract classes can extend other class and implement interfaces but interface can only extend other interfaces.