Abstract class Vs Interface in Java | Camparison | Java For Beginner | Difference Relations.

Abstract class Vs Interface

Sr No.	Abstract Class	Interface
1	Abstract has both Abstract and non-Abstract methods.	Interface only have Abstract methods.
2	It have final,non-final,staticand non-static variables.	It have only Final and Static variables.
3	It is Declare Using Abstract Keyword.	It is Declare Using Interface Keyword.
4	Abstract Class Extends Another Java Class.	Interface Extends only Java Interface only.
5	It can be extends using “extends” keyword.	It can be implements using “implements” keyword.
6	Abstract class has class members to be private and protected.	Interface has class members by default public only.
7	It Doesn't support Multiple inheritance.	It support multiple inheritance.
8	Example: public abstract class demo{ public abstract void disp(); }	Example: public interface Demo{ void show(); }

Abstract class
A Java abstract class is a class which cannot be instantiated, meaning you cannot create new instances of an abstract class.

Declaring an Abstract Class in Java

public abstract class MyAbstractClass
{

}

Interface in java

An Interface is basically a kind of class. Like classes , interface has variables and methods but with some major differences.

The differences is that interface have :-

1. Abstract and Final Methods and
2. Abstract and static variables.

Syntax:-

interface  Interfacename 

{

variables declaration;

Methods decalaration;

}

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Abstract class in Java | Java For Beginner | Java Example | Java Basic.
Interface in Java | Creation and Implementation | Abstract and final methods | Java for beginner.