Socket theSocket;
String host = "localhost";
if (args.length > 0) {
host = args[0];
}
try {
InetAddress theAddress = InetAddress.getByName(host);
for (int i = 1024; i < 65536; i++) {
try {
/* The following line has been changed. The book used host instead
of theAddress which works as expected does not test the polymorphic
constructor variant this section discusses. */
theSocket = new Socket(theAddress, i);
System.out.println("There is a server on port " + i + " of " + host);
} // end try
catch (IOException e) {
// must not be a server on this port
} // end catch
} // end for
} // end try
catch (UnknownHostException e) {
System.err.println(e);
} // end catch
