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We're giving away four copies of Functional Reactive Programming and have Stephen Blackheath and Anthony Jones on-line!
See this thread for details.
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Random question

 
Isaac Hewitt
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Netbeans IDE
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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
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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 ]
 
Rob Spoor
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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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