Waiting data file from another application

Hi,
I would appreciate your help with the following problem:
I am executing an application from within my java application as a process and waiting until it finishes. I need the results file from that application to be read from within mine. The problem is that this application creates other processes that dump the results files long after its main process has informed my application about its successfull execution. The question is, how can I be sure that the particular result files are already written to the end and closed by those hidden for me processes.
Thank you in advance!

If I understood well, you're saying that :
1) you have to wait for the results before proceeding with your application, and you do not have control over the writing processes so that you cannot use some kind of async notification (e.g JMS),
2) Even when your app is informed of the success of the operation, at that exact time you are not getting the result files you need to proceed. So being informed of success and being able to proceed happen at different times ?
In that case, the one solution that comes to mind is 'polling' :
When you're being informed of success, spawn a separate thread (to prevent app freezing) that continuously polls the result files in a while loop.Or, if you don't want to waste CPU cycles, make the thread sleep for a while and try again at regular intervals.
Less than perfect solution, but I don't see any other alternative ..
You'll then have to figure out what to do with your app while you're trying to get the results...
Hope this helps a bit.

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    STOP opening new threads for ongoing solution to SAME problem
    Re: I have copy of data files! How to install and add these files to database!
    Re: Failure of network storage!
    Re: I have copy of data files! How to install and add these files to database!
    Handle:      misterimran
    Email:      misterimran
    Status Level:      Newbie
    Registered:      Jan 15, 2002
    Total Posts:      1,109
    Total Questions:      130 (115 unresolved)
    so many questions & so few answers!
    Edited by: sb92075 on Feb 19, 2011 7:49 PM

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