Whats The Difference Between An Interface And An Abstract Class

Hiding the internal implementation of the feature and only showing the functionality to the users.

Whats the difference between an interface and an abstract class. Both abstract class and interface are used for abstraction. An abstract class is a way to achieve the abstraction in c. When you want api to stay constant for a while then you choose interface over abstract class. Abstract class and interface are two object oriented constructs found in many object oriented programming languages like java.

Sample code for interface and abstract class in java. Multiple inheritances could be gained by implying multiple interfaces. This class must contain at least one abstract method which is marked by the keyword or modifier abstract in the class definitionthe abstract classes are typically used to define a base class in the class hierarchy. Abstract class and interface both cant be instantiated.

Abstract class is a class that cannot be initialized but can be extended. Abstract class can be considered as an abstract version of a regular concrete class while an interface can be considered as a means of implementing a contract. Simply abstract class achieves partial abstraction 0 to 100 whereas interface achieves fully abstraction 100. Prerequisite interface abstract class abstraction.

But there are many differences between abstract class and interface that are given below. Example of abstract class and interface in java. Abstract class vs interface. An abstract class is never intended to be instantiated directly.

Abstract class can have abstract and. What it works showing how it works hiding. An abstract class permits you to make functionality that subclasses can implement or override whereas an interface only permits you to state functionality but not to implement it. An abstract class is object orientated while interface is function oriented.