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Isaac Hewitt
Ranch Hand

Joined: Jul 24, 2006
Posts: 190

I am doing a program where I use a JWindow as sticky notes. I give each note and ID using code like this.



When I run some tests I get some of the ID numbers printed with a minus sign preceding the number. I would like to be able to not have a minus sign there. What should I do. Thanks.
Garrett Rowe
Ranch Hand

Joined: Jan 17, 2006
Posts: 1296

The real question is why are you using a random number generator to assign an ID? What happens if you happen to assign the same ID to two different objects.
[ July 19, 2008: Message edited by: Garrett Rowe ]

Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them. - Laurence J. Peter
Rob Spoor
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Joined: Oct 27, 2005
Posts: 19696
    
  20

I agree with Garrett. A better approach would be to use a static field:

Note that I made the method synchronized to make sure that the increase is atomic.


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