Abstract Class Simple Example

Animal myobj new animal.

Abstract class simple example. First step lets create an abstract class abscalculate having abstract methods and non abstract methods. Fourleggedanimal public override string describe string result basedescribe. The method called description is just a generic method defined for the class. The abstract modifier indicates the incomplete implementation.

Abstract class animal public abstract void animalsound. Class dog. A typical example of an abstract class is given below. Abstract class fourleggedanimal public virtual string describe return this animal has four legs.

You can see an abstract class like a lazy student who has to be told to read his books. In this example shape is the abstract class and its implementation is provided by the rectangle and circle classes. Now coming to an abstract class it is a kind of class that has at least one pure virtual function is known as abstract classin other words if we only declare the function in the base class and doesnt write its implementation in the base class and we use derived classes for writing an implementation of the declared function then that class. Will generate an error.

Below is the definition of a class called animal when the animal class is defined there is nothing known about the animal whether it is a dog or a cat. If he doesnt get told he wont be able to read his books. An abstract method to be overridden in derived class public abstract int. Also the abstract modifier can be used with indexers events and properties.

Below a simple example in c which illustrates abstract class with abstract methods and non abstract methods. Mostly we dont know about the implementation class which is hidden to the end user and an object of the implementation class is provided by the factory method. Abstract class abscalculate a non abstract method public int addition int num1 int num2 return num1 num2. The keyword abstract is used before the class or method to declare the class or method as abstract.

Abstraction in c is the process to hide the internal details and showing only the functionality. From the example above it is not possible to create an object of the animal class. Class a public. Rules to be followed for abstract class.

Example abstract class program. Telling the student is now analogous to extending the abstract class and the student then reading his books is analogous to the execution of the concrete methods if you like. An abstract method is a method that is declared but not implemented in the code. An abstract class can have both abstract and regular methods.

Abstract classes and methods are when the parent class has a named method but need its child classes to fill out the tasks. Result in fact its a dog. Public abstract void geek. Public void sleep systemoutprintlnzzz.

An abstract class is a class that contains at least one abstract method. Subclass only a base class in a hierarchy to which the class logically belongs. The abstract class cannot be instantiated. Virtual void fun1 0.

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