TOP 6 difference between Abstract class and Interface in JAVA Must know facts

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This tutorial covers the difference between abstract class and interface.As we go further with this tutorial we are going to learn the top 6 difference when we compare interface vs abstract class in java. • First Lets talk about what is interface in java and what is the use of interface in java ? • So when we know the specification but not aware of the implementation, then we should go for an interface. • Then the next question will be what is abstract class in java and what is the use of abstract class in java ? • The answer is very simple, When we know the partial implementation then we should prefer abstract class. • I will try to demonstrate you the difference between interface and abstract class with a simple example with this tutorial. • —————— • The abstract keyword is used to create an abstract class whereas interface keyword is used to create an interface. • ------------------ • The variable of an abstract class can have final, non-final, static and non-static variables whereas the variable of an interface should be always public static final. • ———————— • Another difference between abstract class and interface in java is : • we can achieve multiple inheritances by using interface whereas with an abstract class it is not possible as multiple inheritance is not supported by java. • —————————— • An interface can’t have a constructor within it whereas the abstract class can have a constructor within it.know all the reasons why the abstract class does contain a constructor, you can follow the below tutorial by clicking on the link : • [ • Why we need constructor inside an abstract class ? || Popular Java interview question • • Why we need constructor inside an abs... • ——————————— • An interface in java can have an only abstract method within it whereas the abstract class in java can have both abstract and concrete method within it. • (FYI: from java 8 we can have both concert and abstract method within an interface ) • To know more, watch this tutorial : • INTERFACE IN JAVA 8 with REAL TIME code ||Why DEFAULT Method?[Explained] • • INTERFACE IN JAVA 8 with REAL TIME co... • • —————————————— • Well, we can have few more differences as well but these are the few common difference between abstract class and interface in java that each developer should • aware of. • ------- • Please subscribe to my channel by clicking on the link below. • / @seleniumexpress • Stay tuned and like my Facebook page for more. • / seleniumexpress • • Music : • ----------- • credits : - • Adventures by A Himitsu / a-himitsu • Creative Commons — Attribution 3.0 Unported— CC BY 3.0 • http://creativecommons.org/licenses/b... • Music released by Argofox • A Himitsu - Adventures [Royalty Free ... • Music provided by Audio Library • Adventures – A Himitsu (No Copyright ... • • ----- • intro template : • wwww.youtube.com/Alexbau01

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