Language Fundamentals - Programming

Q1:

public interface Foo 
{ 
    int k = 4; /* Line 3 */
}
Which three piece of codes are equivalent to line 3?
  1. final int k = 4;
  2. public int k = 4;
  3. static int k = 4;
  4. abstract int k = 4;
  5. volatile int k = 4;
  6. protected int k = 4;

A 1, 2 and 3

B 2, 3 and 4

C 3, 4 and 5

D 4, 5 and 6

ANS:A - 1, 2 and 3

(1), (2) and (3) are correct. Interfaces can have constants, which are always implicitly public, static, and final. Interface constant declarations of public, static, and final are optional in any combination.