Abstract class vs interface C#

The short answer: An abstract class allows you to create functionality that subclasses can implement or override . An interface only allows you to define functionality, not implement it. And whereas a class can extend only one abstract class, it can take advantage of multiple interfaces.

An interface is better than a abstract class when you want multiple classes to implement that interface and when you don’t have to inherit default behavior .

Abstract class and interface both are used to achieve abstraction where we can declare the abstract methods. Abstract class and interface both can’t be instantiated. … Difference between abstract class and interface. Abstract classInterface5) The abstract keyword is used to declare abstract class.The interface keyword is used to declare interface.Difference between Abstract class and Interface – Javatpoint www.javatpoint.com › difference-between-abstract-class-and-interface

4) The fourth difference between abstract class and interface in Java is that abstract class are slightly faster than interface because interface involves a search before calling any overridden method in Java.30 Haz 2018

The performance of an abstract class is fast. The performance of interface is slow because it requires time to search actual method in the corresponding class. It is used to implement the core identity of class.