Web Reference: Excepting Object, which has no superclass, every class has one and only one direct superclass (single inheritance). In the absence of any other explicit superclass, every class is implicitly a subclass of Object. Java Inheritance (Subclass and Superclass) In Java, it is possible to inherit attributes and methods from one class to another. We group the "inheritance concept" into two categories: subclass (child) - the class that inherits from another class superclass (parent) - the class being inherited from To inherit from a class, use the extends keyword. In this tutorial, you'll learn how to use superclass and subclass and the purpose of it. You will also learn a new keyword/syntax called "extends."
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