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Abstract Classes in C#
An abstract class in C# includes abstract and non-abstract methods. A class is declared abstract to be an abstract class. You cannot instantiate an abstract class.
Let us see an example, wherein we have an abstract class Vehicle and abstract method display()−
public abstract class Vehicle {
public abstract void display();
} The abstract class has derived classes: Bus, Car, and Motorcycle. The following is an implementation of the Bus derived class −
public class Bus : Vehicle {
public override void display() {
Console.WriteLine("Bus");
}
} Example
Let us see the complete example of abstract classes in C# −
using System;
public abstract class Vehicle {
public abstract void display();
}
public class Bus : Vehicle {
public override void display() {
Console.WriteLine("Bus");
}
}
public class Car : Vehicle {
public override void display() {
Console.WriteLine("Car");
}
}
public class Motorcycle : Vehicle {
public override void display() {
Console.WriteLine("Motorcycle");
}
}
public class MyClass {
public static void Main() {
Vehicle v;
v = new Bus();
v.display();
v = new Car();
v.display();
v = new Motorcycle();
v.display();
}
} Output
Bus Car Motorcycle
Updated on: 19-Jun-2020
2K+ Views
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