Can i use singleton for storing current login id

hello,
can i use a singleton for storing login userid temporarilary for application lifetime. Is there any issue if more than 2 users login at the same time as the singleton object will be static ! ..

let me ask more precisely..
is there anything of concern if i run my program(involving statics) by 2 jvm instances.
public class Demo extends Thread
     static String[] myargs ;
     public static void main(String args[])
          myargs = args;
          try
               Demo.sleep(5000);
          catch(InterruptedException e)
          System.out.println(myargs[0]);
}look at the pre code...what if i try to run it by using 2 command promptS
giving different aruements (a bit quick)
Edited by: rajat on Dec 28, 2007 7:14 AM

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Thanks for your suggestion.
U Asked
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Can i use singleton for storing current login id

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