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If all the methods in abstract class are declared as
abstract then what is difference between abstract class and
in interface?
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Answer / ravi
if all the methods are abstract in abstract class,then the
only difference left is,,,,
interface can have static and final variables with public
and abstract access modifier only ,,,while abstract class
can have any type of variable with any type of access
modifiers
| Is This Answer Correct ? | 30 Yes | 3 No |
Answer / ravi sv
Multiple inheritance is possible only through interface,not
with abstract class. So if u have an interface we can go
implementing multiple interfaces rather than extending a
single abstract class.
| Is This Answer Correct ? | 15 Yes | 1 No |
Answer / namita
In abstract class concrete methods are also there. concrete
methods are the one which has implementation. so in future
if any programmer wants to give concrete methods can use
abstract class not interface.
In abstract class for methods and variables
public,private,protected modifier can be use. but in
interface public and abstract are permitted.
| Is This Answer Correct ? | 18 Yes | 6 No |
Answer / sumit jain
i am not agree with the answer provided by prasad bhagwat
as already mention inthe question that all the method of
abtract class are declared as abstract and as per rules of
abstract class impletation you need to provide
implemenation of all abstract methods present in abstract
class unitl & unlesss you declared child class also as an
abstract class.
| Is This Answer Correct ? | 9 Yes | 2 No |
Answer / ashok kumar
Methods in the abstract class can be accessed only through
a class hierarchy i.e through inheritance.
But methods in the interface can be accessed anywhere i.e
across the class hierarchy.(without inheritance).
| Is This Answer Correct ? | 7 Yes | 7 No |
Answer / pravin
If you are making methods as abstract other restictions of
and difference is as it is like about modifiers[private, final, transient, volatile]
when condition is like your class extends other class [like JFrame or any such condition]then you cant use abstract class you must go to the interfaces.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / sachin more
All others are just giving the descriptn of Abstract and Interface Classes, the exact and simple answer is given by Prasad Bhagvat. Sorry Sumit, But u r confused betwn Abstract and Interface classes, u r saying the exact opposite
| Is This Answer Correct ? | 0 Yes | 3 No |
Answer / prasad bhagwat
You can inherit the abstract class and use only those
methids which you want.
But in Interface you have you implement every method.
| Is This Answer Correct ? | 7 Yes | 18 No |
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