forum

Home / DeveloperSection / Forums / Abstract class

Ask Question

Abstract class

Anonymous User 718 09-Jul-2018

What is Abstract class and Interface in Java ?

java java 
Updated on 10-Jul-2018
Anonymous User

Anonymous User

Follow
I am a content writter !

Can you answer this question?

Answer

1 Answers

Prakash nidhi Verma

Prakash nidhi Verma

10-Jul-2018

Abstract class and Interface in Java :

Declaration: 

Abstract class is declared using 'abstract' keyword .Interface is declared using 'interface' keyword .

Methods: 

Abstract class may contain abstract or concrete methods We can define abstract, default and static methods in an Interface.Access modifiers 

Implementation: 

Abstract class can not be instantiated but can be extended.Interface can be implemented by another class or can be extended by other interfaces Multiple inheritance. 

difference feild is shown below : 

- Methods

- Members

- Inheritance

- Member variables

- Members visibility

- Keyword

- main() exists

- Flexibility

Example : 

1. Abstract class 

abstract class 
{

   abstract void absmethod1();

   abstract void absmethod2();

   void concmethod()

   {

   //concrete method

   }

}

2. Interface 

interface myinterface 
{

    void method1();

    void method2();

   // no concrete method

}

Liked By