Flow Control - Programming

Q1:

What will be the output of the program?
public class Switch2 
{
    final static short x = 2;
    public static int y = 0;
    public static void main(String [] args) 
    {
        for (int z=0; z < 3; z++) 
        {
            switch (z) 
            {
                case y: System.out.print('0 ');   /* Line 11 */
                case x-1: System.out.print('1 '); /* Line 12 */
                case x: System.out.print('2 ');   /* Line 13 */
            }
        }
    }
}

A 0 1 2

B 0 1 2 1 2 2

C Compilation fails at line 11.

D Compilation fails at line 12.

ANS:A - 0 1 2

Case expressions must be constant expressions. Since x is marked final, lines 12 and 13 are legal; however y is not a final so the compiler will fail at line 11.