Just calling this method with ServerSocket will throw the following error:

Exception in thread "main" java.lang.ClassCastException: java.lang.Integer
> at java.net.ServerSocket.getReuseAddress(ServerSocket.java:493)
> at Server.openClientStreams(Server.java:179)
> at Server.doServerLoop(Server.java:86)
> at Server.main(Server.java:67)