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Problem in java

PoloDude
in Programming (C++, Delphi, VB/VBS, CMD/batch, etc.)

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Hi, we developed a program, a so called mud (multi user dungon)

Kinda stupid and out of dated game but hey, school-project :)

We have a server and a client and when we try to add a new user to the db we get this error java.util.ConcurrentModificationException and the client runs block

Adding the user is performed in a thread.

Any idee how this can be solved?

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