Abstract Base Classes

Dec 09, 2012

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Abstract Base Classes

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Presentation Transcript

Final and Abstract Classes

Final and Abstract Classes. Parent. Child. Restricting Inheritance . Inherited capability. Final Members: A way for Preventing Overriding of Members in Subclasses. All methods and variables can be overridden by default in subclasses.

428 views • 28 slides

Abstract Classes and Interfaces

Abstract Classes and Interfaces. The objectives of this chapter are: To explore the concept of abstract classes To understand interfaces To understand the importance of both. What is an Abstract class?. Superclasses are created through the process called "generalization"

326 views • 16 slides

Abstract Classes and Interfaces

Abstract Classes and Interfaces. Lecture 2 – 9/6/2012. Objectives . Review OOP Concepts Static variables and methods Scope of variables and methods Abstract classes Interfaces Comparing Abstract class and Interfaces. Object Oriented Programming (OOP) .

539 views • 34 slides

11 Implementing Abstract Classes

11 Implementing Abstract Classes. Contents. Define Abstract Class Rules on Abstract Class Define Interface Implementing Interface Uses of Interface Abstract class versus Interface Define Final Class Rules on Final Class Abstract class versus Final class. Objectives.

324 views • 16 slides

Abstract Classes

Abstract Classes. Overview Abstract Classes: A Definition. Declaring Abstract Classes. Abstract Methods: A Definition. Abstract Methods: An Example. Abstract Classes and Polymorphism. A programming Example. Summary. Coming Next: Java Interfaces. Abstract Classes: A Definition.

634 views • 16 slides

Abstract Classes and Methods

Abstract Classes and Methods. An abstract class is one which the programmer never intends to instantiate. Concrete classes, classes intended to be instantiated. Abstract classes. Too generic to create real objects Reduce dependency on concrete class code Made abstract by key word “abstract”

295 views • 5 slides

Virtual Base Classes

Virtual Base Classes. By: Nouf Aljaffan Edited by : Nouf Almunyif. An element of ambiguity can be introduced into a C++ program when multiple base classes are inherited. Consider the following incorrect program:. incorrect program :.

1.9k views • 9 slides

Abstract Classes

Abstract Classes. An abstract class is a placeholder in a class hierarchy that represents a generic concept An abstract class cannot be instantiated We use the modifier abstract on the class header to declare a class as abstract:. public abstract class Whatever { // contents }.

941 views • 58 slides

Interfaces and Abstract Classes

Interfaces and Abstract Classes. The ability to define the behavior of an object without specifying that behavior is to be implemented Interface class is similar to class specification Contains only a list of methods & their parameters Omitting the implementation of each method

178 views • 7 slides

Abstract Classes

Abstract Classes. So Far. We have covered polymorphism What is it? And virtual functions What are those? Today we will learn about Abstract class Pure virtual functions. Abstract Classes. Consider a base class called GameObject that contains a draw function

274 views • 12 slides

ABSTRACT CLASSES

ABSTRACT CLASSES. IHTESHAM UL HAQ. ABSTRACT CLASSES. Abstract classes are kinds of classes which cannot be instantiated. Means we cannot create an object of the class. But what we can do is to create certain variables and methods which might not be empty.

195 views • 4 slides

Abstract Classes

Abstract Classes. An abstract class is a class with partial implementation. It implements behaviors that are common to all subclasses, but defers to the subclasses to implement others ( abstract methods ). Abstract methods must be implemented in each non-abstract subclasses.

417 views • 28 slides

Abstract Classes

Abstract Classes. Goal. Abstract classes Examples. Abstract Classes. Should not be instantiated (abstract in Java) But can define complete methods. Defines a protocol common to a hierarchy of classes that is independent from the representation choices.

285 views • 26 slides

Abstract Classes and Interfaces

360 views • 16 slides

Implementing Abstract Classes

Implementing Abstract Classes. Define Abstract Class Rules on Abstract Class Define Interface Implementing Interface Uses of Interface Abstract class versus Interface Define Final Class Rules on Final Class Abstract class versus Final class. Objectives.

180 views • 15 slides

Abstract Method & Abstract Classes

Jim Brucker. Abstract Method & Abstract Classes. What is an Abstract Method?. An abstract method is a method declaration without a method body. An abstract method specifies behavior but no implementation. Example : In the Number class, intValue , longValue , ... are abstract.

876 views • 20 slides

Abstract Classes

Abstract Classes. Abstract Classes. When we define a class to be “final”, it cannot be extended. In certain situation, we want properties of classes to be always extended and used. Such classes are called Abstract Classes. An Abstract class is a conceptual class.

473 views • 45 slides

Abstract Classes

Abstract Classes. “I prefer Agassiz in the abstract, rather than in the concrete.”. The Property Example. There are properties on a Monopoly board Railroads, Utilities, and Streets are kinds of properties One behavior we want in Property is the getRent method

225 views • 20 slides

Abstract Classes

Abstract Classes. Java. Learning Objectives. Be able to understand and write programs using Abstract Classes. Abstract Classes and Polymorphisms. Classes in a hierarchy are related by the "is-a" relationship. For example, a Nissan is-an Automobile, and a Skyline GTR is-a Nissan.

320 views • 30 slides

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Abstract Base Classes

Abstract Base Classes

Presentation Transcript

Final and Abstract Classes

Abstract Classes and Interfaces

Abstract Classes and Interfaces

11 Implementing Abstract Classes

Abstract Classes

Abstract Classes and Methods

Virtual Base Classes

Abstract Classes

Interfaces and Abstract Classes

Abstract Classes

ABSTRACT CLASSES

Abstract Classes

Abstract Classes

Abstract Classes and Interfaces

Implementing Abstract Classes

Abstract Method &amp; Abstract Classes

Abstract Classes

Abstract Classes

Abstract Classes

Abstract Method & Abstract Classes