An abstract keyword followed by a class name is used to declare the abstract class. An abstract class mostly used to offer a base for the subclass to extends and implement the abstract method.
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A class can be declared abstract by using abstract keyword only . A class declared as abstract can’t be initialised. An abstract class can be extended, but if you inherit an abstract class then you have to make sure that all the abstract methods in it are provided with implementation.2 Eyl 2020
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