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loop iterator

Glen Iris
Ranch Hand

Joined: Jul 13, 2011
Posts: 168


What is the difference, if any, between:

Prints "123"


also prints "123"

Stephan van Hulst

Joined: Sep 20, 2010
Posts: 4199

Nothing. I prefer the first because I like the way it looks better.

The mind is a strange and wonderful thing. I'm not sure that it will ever be able to figure itself out, everything else, maybe. From the atom to the universe, everything, except itself.
Zeeshan Sheikh
Ranch Hand

Joined: Nov 20, 2011
Posts: 144

Well in a loop you wouldn't see this difference. The value will always increment. To understand prefix and postfix increments consider following example

static int x = 0;

public static void main(String[] args) {

System.out.println ("The value of x: " + x++); //output 0
System.out.println ("The value of x: " + x); //output 1
System.out.println ("The value of x: " + ++x); //output 2

In first output current value of x will output and then it will be incremented
In last output statement value is incremented and and 2 will output on console.

As far as your example goes I don't think there will be any difference on the output.

I hope this helps.

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Fab Miredino

Joined: Apr 08, 2011
Posts: 3

Hi Glen,

Maybe it would be more clear for you, if you see the loop for as a loop while. You can always change a loop into a while loop.

Glen Iris
Ranch Hand

Joined: Jul 13, 2011
Posts: 168

Thanks Stephan - I thought as much.

Thank you Zeeshan. I should have stated that in the OP.

Thank you Fab - thats a good idea :-)
I agree. Here's the link:
subject: loop iterator
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