integer array

[Christina Pong]

code from John Meyer's SCJP5
--------------------------------------------------------
int[] a= {1,2,3,4 };
for( int n :a){

a[n]= 0 ;
}


for ( int i : a )
{
System.out.println(i);//prints 0 0 3 0
}

------------------------------------------------------

can anybody tell me why above code doesn't thrown an IndexOutOfBound exception at runtime, instead having an output of 0 0 3 0?

Thanks !

[Ankit Garg]

Hi Christina!

If you search the forum, then you will see that this question has been asked many times. Here's a link to one of them...

[Christina Pong]

Hi Ankit,
Thanks for the reply. Wow, isn't it tricky?
The output is so much different than what you thought it supposed to be. Gosh, it beats me.
Byt the way, Ankit, you are so cool. You seem know all the answers or sources to those tricky questions. Great to have a pal like you in this forum :-)

Christina

[Ankit Garg]

Yes the question is a genius creation...