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Declarations and Access Control

Q1:

Which three form part of correct array declarations?
  1. public int a [ ]
  2. static int [ ] a
  3. public [ ] int a
  4. private int a [3]
  5. private int [3] a [ ]
  6. public final int [ ] a

A 1, 3, 4

B 2, 4, 5

C 1, 2, 6

D 2, 5, 6

ANS:C - 1, 2, 6

(1), (2) and (6) are valid array declarations. Option (3) is not a correct array declaration. The compiler complains with: illegal start of type. The brackets are in the wrong place. The following would work: public int[ ] a Option (4) is not a correct array declaration. The compiler complains with: ']' expected. A closing bracket is expected in place of the 3. The following works: private int a [] Option (5) is not a correct array declaration. The compiler complains with 2 errors: ']' expected. A closing bracket is expected in place of the 3 and <identifier> expected A variable name is expected after a[ ] .



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