what is the difference between abstract class and
Interface?where we can use it in realtime projects?
Answer Posted / vishal srivastava
Abstract Class | Interfaces
|
1. Starts with a class keyword | Starts with interface
| keyword
2. abstract modifier has to be | No need to provide abstract
provided | modifier (100 % Abstract)
3. Not necessary to contain | All methods are by default
abstract methods, but if a | public and abstract, and
class has abstract method | all attributes are public
then class has 2 be abstract| static, and final (FIELDS)
4. Says what a class should be | Says how a class must
like, behaves like a model | behaves and what it is
| able to do
5. Therefore, Generally given | Thus, given names as
class name as Nouns | Adjectives
6. Used for group of related | Any class can implement
classes only | interfaces
7. Single inheritance is | Multiple inheritance can
allowed only | be achieved
8. All class behaviours are | Cannot have constructors,
allowed, except creating | should initialise its
objects of abstract classes | Fields
Is This Answer Correct ? | 15 Yes | 2 No |
Post New Answer View All Answers
What is the difference between logical data independence and physical data independence?
What is meant by flickering?
What does serializing data mean?
When is an object subject to garbage collection?
Difference between object and reference?
What do you know about the garbate collector?
Is empty in java?
Why are pointers not secure?
What is the meaning of flag day?
Explain methods specific to list interface?
what is recursion in java
Is java a virus?
What are peerless components in java programming?
What is lastindexof in java?
Which one of the following suits the description of a string better: derived or primitive?