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file writing to disc in a multiuser enviornment.

amhicraig asked
Last Modified: 2013-11-23
I have to generate a file x through a method.Based on the data input to the method the files contents will vary.How will i do this if there are 100 users all using the system at the same time - in such a scenario when user a is viewing the file the file will be modified by user b which is not desirable.Pl. advise.
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use some form of synchronization
either synchronized keyword
for example
Class x{
File f = new File(...);
 // read , write .. do stuff - single user, single thread

or use java.util.concurrent  (for example single Semaphore)

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