Introduction to Inheritance in java скачать в хорошем качестве

Introduction to Inheritance in java

A superclass is referred to as a parent class or a base class Subclass is referred to as a child class, an extended class, or a derived class. A subclass inherits accessible data fields and methods (protected and public) from its superclass and may also add new data fields and methods The subclass and its superclass are said to form a is-a relationship. a subclass is not a subset of its superclass. In fact, a subclass usually contains more information and methods than its superclass. The keyword extends is used for inheritance.