My server application doesn't work on eclipse

Question

when I run my server application on eclipse it doesn't work and the error is shown as following:

java.net.SocketException: Unrecognized Windows Sockets error: 0: JVM_Bind
    at java.net.PlainSocketImpl.socketBind(Native Method)
    at java.net.PlainSocketImpl.bind(Unknown Source)
    at java.net.ServerSocket.bind(Unknown Source)
    at java.net.ServerSocket.<init>(Unknown Source)
    at java.net.ServerSocket.<init>(Unknown Source)
    at MyServer.main(MyServer.java:17)
Exception in thread "main" java.lang.NullPointerException
    at MyServer.main(MyServer.java:26)

Can we see your MyServer code? becuase it's hard to debug if theres no code — RMT, Aug 04 '11 at 13:13
It seems like your server trying to run on port which is already been bold by some other server or application. — Harry Joy, Aug 04 '11 at 13:15
@Harry Joy usually the error message for that is "port already in use" is it not?? — RMT, Aug 04 '11 at 13:15
Yeah, you usually see `Adress already in use: JVM_BIND` if the port is already bound. — Hunter McMillen, Aug 04 '11 at 13:16
Not answered but seems to be a duplicate of [this](http://stackoverflow.com/questions/3947555/java-net-socketexception-unrecognized-windows-sockets-error-0-jvm-bind-jboss). You use Windows 7? — home, Aug 04 '11 at 13:18
@RMT: I apologize. It was my mistake. The message for that is not the same as this one. — Harry Joy, Aug 04 '11 at 13:21
thank to all, when I changed port number the server worked well. — user875264, Aug 04 '11 at 13:29
@user875264: You did not get the root cause, I'm interested...?! — home, Aug 04 '11 at 14:59

score 1 · Answer 1 · answered Aug 04 '11 at 13:18

I think you forgot to initialize the port and you are trying to connect to port=0 that is invalid. I thing that your application receives port via command line. When you are running it from eclipse you forgot to provide it. Do it using the run/debug configuration.

It is just a theory. I do not see your code.

My server application doesn't work on eclipse

1 Answers1