Question about local variables in switch

[Arsineh Keshishian]

Hi,

When running this code:

int n = 4
final int x = 3;
final int y = 4;

switch(n)
{
      case x: System.out.println("Hi"); int j = 5; break;

      case y: System.out.println("j: "+j); break;
}

I'M getting a compiler error because of j using in case y.
The compiler complains that "j may have not been initialized yet". But I can not reinitialize j either because of "duplicate local variable j".
So the only way is to make j final in case x: final int j = 0;

Why does j has to be final?

Thank you
Arsineh

[Ravikanth kolli]

do you have a global variable "j"?