forum

home / developersection / forums / abstract class

Ask Question

Abstract class

Anonymous User 928 09-Jul-2018

What is Abstract class and Interface in Java ?

java

Updated on 10-Jul-2018

Anonymous User

Other

I am a content writter !

Message

Can you answer this question?

Answer

1 Answers

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

}

forum

Abstract class

Anonymous User

Can you answer this question?

1 Answers

Liked By