If you got the error on running ./minecraft.sh on the Centos
14:11:07 [WARNING] **** FAILED TO BIND TO PORT!
exception was: java.lang.NoSuchMethodError: method java.net.ServerSocket.
setPerformancePreferences with signature (III)V was not found
Then please check the java version on the Centos.The application need jav version >1.6 to run the application.
So please install it..
Java installation steps
Please follow the link http://blog.secaserver.com/2011/10/installing-java-1-6-centos-6/ to get more information regarding the installation of latest Java using RPM forge repository.
After java is installed please run the application again.It will work!!!!!!!!!!!!!!!!