IndiaBIX

Java Programming - Inner Classes - Discussion

Discussion Forum : Inner Classes - General Questions (Q.No. 1)
Inner Classes
1.
Which is true about an anonymous inner class?
It can extend exactly one class and implement exactly one interface.
It can extend exactly one class and can implement multiple interfaces.
It can extend exactly one class or implement exactly one interface.
It can implement multiple interfaces regardless of whether it also extends a class.
Answer: Option
Explanation:

Option C is correct because the syntax of an anonymous inner class allows for only one named type after the new, and that type must be either a single interface (in which case the anonymous class implements that one interface) or a single class (in which case the anonymous class extends that one class).

Option A, B, D, and E are all incorrect because they don't follow the syntax rules described in the response for answer Option C.

Discussion:
11 comments Page 2 of 2.
Arkadeep said:   1 decade ago
Please give details about inner classes. Are they different from child classes?
Post your comments here:

Your comments will be displayed after verification.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers