can you create interface instance ?
- 54 Answers
- 71667 Views
- Fidelity, TCS, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / nilesh
We can create instance of Inteface. Also Interface can
extends another more than one interface. So plz check out.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / rushi shah
The above code given by Udaykiran gives the following error even before it is compiled:
Can not instantiate the type 'Test' type.
Which means that we can not create any object of interface.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / sharath
we can create an object for interface but the there will be
of no use because interface methods are abstract in nature
i.e they doesn't have any implementation..
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / kishore emani
Hi Anil, In this case uday sounds good!
As per your consideration if it is an anonymous class then
just remove that interface from our application and try to
compile it won't compile that code.
Here Test is an interface, for which to create the object
we need to provide the complete implementation for that
interface the same thing which uday did.
and again u check it if(t instanceof Test)
it is returning true that means t is an instance for Test.
and here the object is creating in the heap.
at finally here an instance is created for an interface.
| Is This Answer Correct ? | 4 Yes | 7 No |
Answer / guest
Hi all,
I think Udaya is right and i have tested in the same and its
working. But if you think about the way JAVA has to make
instances(e.g. A a = new A()) will not work. It will give
you compilation error. So there is something we are not able
to see. Even I am trying to get what this example actually
working.
Feel free to update me if I am wrong...☺
| Is This Answer Correct ? | 1 Yes | 7 No |
Answer / akhilesh
hey uday u r master in java yaar, by people like u we can
change the java world keep it up dude. just keep on posting
these kind of impossible things ok. Thanks a lot for that :)
| Is This Answer Correct ? | 14 Yes | 23 No |
Answer / uday
Hi Deepesh, uday is back again
Hey just see the question . can you create interface
instance?
just say the answer Yes or No?
my answer is Yes
how is it possible? Already i gave the example.I know that
this is anonymous inner class concept. But i don't want to
exceed this concept for too complex. that's why i did it in
this manner.Any How i thanks to all of you for more inputs.
but u can create the instance for interface. how can we
check an instance is,using instance of operator only. here
it proved hence the affrimative ans is right. i am not
plmbbing your knowledge it's just a kind of inquiry. Thanks
FYI huh!!!!
| Is This Answer Correct ? | 1 Yes | 12 No |
can I implement my own start() method? : Java thread
How do you control extraneous variables?
Relationship between an event-listener interface and an event-adapter class?
Explain the difference between Unicast and Multicast objects?
what is difference between colection and collections?
25 Answers Amdocs, IBM, Infosys, Ipog Software, Polaris, Tech Mahindra,
What is an object's lock and which object's have locks in java programming?
These static constructors are correct ? class A { statc intA() { } static A(int x,int y) { } static A(int x) { } }
How many threads does a core java have?
What is the difference between array list and vector in java?
Which class is the immediate superclass of the Container class?
What do you mean Abstraction in java?
What is string [] args?
Core Java 
