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Can Method Variables be shared between users?  RSS feed

 
Jacob Draper
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Can method variables be shared between users?


I was asked this on an interview and I didn't know what to make of it. THANKS!
 
Chris Barrett
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Hi Jacob,

I don't believe that would be possible for two reasons:

  • Java doesn't support static method variables
  • In a multi-threaded environment, method variables allocate on a thread's method-call stack. Therefore, each thread gets it's own copy of the method variables


  • Cheers!
    Chris
     
    Bear Bibeault
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    I'm not even sure what "shared between users" is supposed to mean.
     
    Winston Gutkowski
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    Jacob Draper wrote:I was asked this on an interview and I didn't know what to make of it.

    Then I suggest that the lesson for next time is probably to ask.

    Interviewers ask some awfully stupid questions; some of which are "smart stupid" - ie, they want to find out how much you know by being deliberately vague - and others which are just plain ridiculous. This sounds to me like the latter, but I'm only going by what I see.

    If you're unsure about something, the best policy is usually to ask for clarification - and the best place to get that is from the interviewer. We can only offer hindsight.

    And if your interviewer regards such a question as a sign of "weakness", then you probably didn't want the job in the first place.
    You could also tell them about the "Dunning-Kruger" effect.

    Winston
     
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