'pass by value' and 'pass by reference'

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January 24th, 2011, 04:23 AM
pokuri

'pass by value' and 'pass by reference'

Hi all,
I have one doubt in java that is

what is 'pass by value' and 'pass by reference' ?
how both use in java..
January 24th, 2011, 04:52 AM
DanBrown

Re: 'pass by value' and 'pass by reference'

Pass by value vs pass by reference
Very good explanation about the above
January 24th, 2011, 06:07 AM
pokuri

Re: 'pass by value' and 'pass by reference'

Tanx For ur replay . if u have the gmail please add me to ur gtalk list . lets be in contact
January 24th, 2011, 08:22 AM
DanBrown

Re: 'pass by value' and 'pass by reference'

pardeepdhingra.01@gmail.com
January 26th, 2011, 10:21 AM
that_guy

Re: 'pass by value' and 'pass by reference'

ok i am confused...

what about arrays?

if:

int i[] = {1};

and i pass it to a method and the method changes it, the actual array is changed. so after the initial change in a method, if that method exits and another method calls the same array, what is stored in the array is what the previous method changed it to, not the original. I was always told that that was passing by reference, help please.

thanks
January 26th, 2011, 10:30 AM
KevinWorkman

Re: 'pass by value' and 'pass by reference'

Quote:

Originally Posted by that_guy

ok i am confused...

what about arrays?

if:

int i[] = {1};

and i pass it to a method and the method changes it, the actual array is changed. so after the initial change in a method, if that method exits and another method calls the same array, what is stored in the array is what the previous method changed it to, not the original. I was always told that that was passing by reference, help please.

thanks

Did you read the tutorials you were given? Basically, the thing that's being passed by value is a reference to the array. The tutorials explain it quite well, so I won't go into it further here.