What is a base class in Java?

In Java terminology, the base class is called the superclass ; derived class or subclass – this is a class that inherits the superclass code. In Java terminology, the inheriting class is called a subclass. The subclass has the ability to supplement the superclass with additional fields and methods.

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What is class hierarchy and example?

A class hierarchy or inheritance tree in computer science is a classification of object types, denoting objects as the instantiations of classes (class is like a blueprint, the object is what is built from that blueprint) inter-relating the various classes by relationships such as “inherits”, “extends”, “is an …

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