My Java server compiles perfectly, but when I try to run it on my
machine I get an error when it tries to open up the ServerSocket on
port 2525. I have tried it on another machine and it works fine. It
also worked on my own machine the first few times I tried it.
Without knowing the exact exception you are getting, it is not
possible for me to definitively diagnose the problem.
However, it sounds like the port is probably in use when it is failing. This
could be caused by an error in closing the socket in one of your
previous runs, or from another program on the system using the port.
To see which ports are in use on your machine you can use the netstat
command if you are using a Unix-based OS or netstat.exe on Win32.