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Which two of the following are legal declarations for abstract classes...

This question belongs to Java Program Interfaces And Abstract Classes
Interfaces and Abstract Classes
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Which two of the following are legal declarations for abstract classes and interfaces?
1. final abstract class Test {}
2. public static interface Test {}
3. final public class Test {}
4. protected abstract class Test {}
5. protected interface Test {}
6. abstract public class Test {}

Answer & Solution
Correct Answer: Option E

(3), (6). Both are legal class declarations.

(1) is wrong because a class cannot be abstract and final "there would be no way to use such a class". (2) is wrong because interfaces and classes cannot be marked as static. (4) and (5) are wrong because classes and interfaces cannot be marked as protected.

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1 Comment
Priyabrata Biswal
Priyabrata Biswal 9 years ago
There is no abstract key in statement 3.The statement is true but its not about abstract class or interface.
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