Single choice question has multiple answers

Hi guys,

I got the following code from Whizlab,

which of the following statements is/are true about compiling and running the following code ?



[A] The program comiples correctly and prints "false" and null.
[B] The program will comiple correctly if line 1 is removed
[C] The program will compile correctly if line 2 is removed
[D] The program will compile correctly if line 3 is removed
[E] The program will compile correctly if line 4 is removed
[F] None of above

This test about final reference variable can not assign value more than once. So answer B and E are both correct, but this is a single answer question, which one should I go if similar question appears in real exam?

Looks like the question is designed with careless attitude. If we go by the compiler then the error will be shown at line 4. So you can go for that.

In exam I don't think that there will be questions like this.

Only E is the correct answer. Line 1 is OK as it sets the final field for the first time which is allowed...

This test about final reference variable can not assign value more than once. So answer B and E are both correct

Only E is correct. B is incorrect.
Have you tried to compile the code after line 1 is removed?
It will still not compile. Because line2 is checking instanceof obj, and compiler will give error:

Varun,

you are right, as you said the answer is E and once I removed line one the initialization problem comes out. Thanks to point out