How to close a connection in linux?

Question

linux

Wrote a simple server in java. Then I closed the console, then again I try to start the server and writes that the address is already in use and does not receive data from the client program. How to close the connection in linux so as not to restart the computer?

Answer 1

Set the SO_REUSEADDR option to the created socket . I
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Answer 2

I think your java server is not dead.
Look in the list of processes, if it is there, then just do a kill