This exception
signals that a socket cannot be connected to a remote host because
the host cannot be contacted. Typically, this means that some link in
the network between the local machine and the remote host is down or
that the host is behind a firewall.
Figure 12-14. java.net.NoRouteToHostException
public class
NoRouteToHostException extends SocketException {
// Public Constructors
public
NoRouteToHostException ( );
public
NoRouteToHostException (String
msg );
}