Interface And Abstract Class

This tutorial will explain you the significance of both interface and abstract classes in simple terms.

Interface and abstract class. The interface does not contain any concrete methods methods that have code. Java interfaces and abstract classes with examples. An interface only allows you to define functionality not implement it. Java interfaces are blueprint like class but will have only method declaration.

Both abstract class and interface are used for abstraction. Note here i am talking about the access specifiers of the member of interface and not about the interface. Abstract class can have abstract and. An abstract class is allowed to have all access modifiers for all of its member declaration while in interface we can not declare any access modifier including public as all the members of interface are implicitly public.

However there are lot of differences than similarities between an abstract class and an interface. Interface supports multiple inheritance. All the methods of an interface are abstract methods. Abstract class vs interface.

2 abstract class doesnt support multiple inheritance. An abstract class is never intended to be instantiated directly. The interface is a blueprint that can be used to implement a class. An abstract class allows you to create functionality that subclasses can implement or override.

An abstract class is a special kind of class that cannot be instantiated. Interface can have only abstract methods. Interface can have only abstract methods. Lets explain both concepts and compare their similarities and differences.

But java abstract class will have abstract methods and concrete methods. 1 abstract class can have abstract and non abstract methods. An abstract class is a class that is declared abstract it may or may not include abstract methodsabstract classes cannot be instantiated but they can be subclassed. An abstract class without any implementation just looks like an interface.

Prerequisite interface abstract class abstraction. Difference between abstract class and interface in c an abstract class is a way to achieve the abstraction in c. However classes that implement interfaces can be instantiated. Java interfaces are blueprint like class but will have only method declaration.

An interface cannot be instantiated. This class must contain at least one abstract method which is marked by the keyword or modifier abstract in the class definition. Hiding the internal implementation of the feature and only showing the functionality to the users.