What Is Difference Between Abstract Class And Interface Till Java 7

A class implements an interface thereby inheriting the abstract methods of the interface.

What is difference between abstract class and interface till java 7. However the interface offers full abstraction in java something that abstract classes cannot do. Prerequisite interface abstract class abstraction. An interface is a blueprint used to implement a class. By watching this tutorial you can understand about all the differences between interfaces and abstract classes in java programming language by the help of real life examples and programs.

6 an abstract class can extend another java class and implement multiple java interfaces. So it is kind of signing a contractyou agree that if you implement this interface then you have to use its methodsit is just a pattern it can not do anything itself. Abstract class vs interface. Interface can have only abstract methods.

Abstract class can have abstract and. An interface is a collection of abstract methods. An abstract class can have both abstract and non abstract methods. An interface can extend another java interface only.

What it works showing how it works hiding. An abstract class cannot be instantiated which prohibits creation of an object. The interface keyword is used to declare interface. An interface on the other hand can only have abstract methods thus they cannot have implementation which simply means an interface cannot have non abstract methods.

It is a collection of abstract methods and contains no concrete methods unlike abstract class. 5 the abstract keyword is used to declare abstract class.