In Object Oriented Programming, one of the major feature is reusability. You are already introduced to the reusability concept in this course. Reusability in Java is due to the inheritance. Inheritance describes the ability of one class or object to possess characteristics and functionality of another class or object in the hierarchy. Inheritance can be supported as “run-time” or “compile-time” or both. Here we are discussing inheritance with the Java programming language, and in our discussion we will generally refer to compile-time inheritance.
In this unit we will discuss importance of inheritance in programming, concept of superclass and subclass, and access controls in Java programming language. You will see through example programs how methods are overridden, and how methods of a super class are accessed by subclass. You will also see how multilevel inheritance is implemented, use of abstract classes, and demonstration of polymorphism with the help of example program.
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In this unit we will discuss importance of inheritance in programming, concept of superclass and subclass, and access controls in Java programming language. You will see through example programs how methods are overridden, and how methods of a super class are accessed by subclass. You will also see how multilevel inheritance is implemented, use of abstract classes, and demonstration of polymorphism with the help of example program.
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