public static PortScan onAddress(String address) throws UnknownHostException {
        return onAddress(InetAddress.getByName(address));
    }
Set the address to ping

@param address - Address to be pinged
@return this object to allow chaining
@throws UnknownHostException - if no IP address for the
                             {@code host} could be found, or if a scope_id was specified
                             for a global IPv6 address.
library/src/main/java/com/stealthcopter/networktools/PortScan.java