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Declarations and Access Control

Q1:
Which two of the following are legal declarations for nonnested 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 {}

A 1 and 4

B 2 and 5

C 3 and 6

D 4 and 6

ANS:C - 3 and 6

(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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