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Thread: Single Server Queue Problem

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    Default Single Server Queue Problem

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    Last edited by Chassy13; March 19th, 2014 at 10:40 PM.


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    Default Re: Single Server Queue Problem

    How do you execute the code for testing? I don't see a main() method.
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Single Server Queue Problem

    The code hangs when I start its execution? There is no output.
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    Default Re: Single Server Queue Problem

    Here's what I get with that input:
    Running: java.exe -cp . SingleServerQueueTest

    Time updated by 2 time units and time is now 2.
    No customer is being served at the present time of 2.
    A customer entered system at time 2. Number waiting in queue is 0.
    Time updated by 4 time units and time is now 6.
    A customer entered system at time 6. Number waiting in queue is 1.
    Time updated by 1 time unit and time is now 7.
    A customer entered system at time 7. Number waiting in queue is 2.
    Customer C1/T2 finished at time 7. Number waiting is 2.
    Program Error!

    1 error(s)
    Here is the statement I use to automate input:
          stdin = new Scanner("T 2\nC\nA\nT 4\nA\nT 1\nA\nC\n"); //<<<<<<<<<<System.in);

    Why is the last line wrong?
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    Default Re: Single Server Queue Problem

    Did the output from my version look like what you get?

    Do the values in the Scanner class's constructor I posted work for you and give you the output showing the problem?

    Why is the last line wrong?
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    Default Re: Single Server Queue Problem

    For testing you should put a String in the Scanner class's constructor like I showed earlier so everyone that tries testing will easily get the same results. I find typing in responses prone to error besides being a waste of time.

    You need to add some debug output to show the status of the queue as the code executes to see what is happening.
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