What is an abstract class 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). A normal class(non-abstract class) cannot have abstract methods.
Can abstract method have body?
Abstract methods means there is no default implementation for it and an implementing class will provide the details. So, it’s exactly as the error states: your abstract method can not have a body. The reason you would do something like this is if multiple objects can share some behavior, but not all behavior.
How do I access an abstract class?
The only way to access the non-static method of an abstract class is to extend it, implement the abstract methods in it (if any) and then using the subclass object you need to invoke the required methods.
What are the features of an abstract class?
Abstract classes have the following features:An abstract class cannot be instantiated.An abstract class may contain abstract methods and accessors.It is not possible to modify an abstract class with the sealed modifier because the two modifiers have opposite meanings.