Meaning of abstract in thesis

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In this example the Vehicle is an abstract base class as it has an abstract member class WheeledLandVehicle is derived from the base class. It also holds data which is common to all wheeled land vehicles, namely the number of wheels. The class TrackedLandVehicle is another variation of the Vehicle class.

Abstract classes serve as templates for their subclasses. For example, the abstract class Tree and subclass, Banyan_Tree, has all the characteristics of a tree as well as characteristics that are specific to the banyan tree.

Understanding the differences between an abstract class and an interface is essential. An interface only has method declarations or abstract methods and constant data members, while an abstract class may have abstract methods, member variables and concrete methods. Because Java only supports single inheritance, a class can implement several interfaces but can extend only one abstract class.

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meaning of abstract in thesis

Meaning of abstract in thesis

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