just to let you know xavier... that won't do anything since n is not defined :p
now if you did something like this
int n = 0;
while(n < 3)
{
switch(n)
{
case 0: System.out.println("0"); break;
case 1: System.out.println("1"); break;
case 2: System.out.println("2"); break;
}
n++;
}
it would work