Method getHostName

src/main/java/core/org/xbill/DNS/Address.java:354–362

Determines the hostname for an address @param addr The address to look up @return The associated host name @exception UnknownHostException There is no hostname for the address

(InetAddress addr)

 * @exception UnknownHostException There is no hostname for the address
 */
public static String
getHostName(InetAddress addr) throws UnknownHostException {
	Name name = ReverseMap.fromAddress(addr);
	Record [] records = new Lookup(name, Type.PTR).run();
	if (records == null)
		throw new UnknownHostException("unknown address");
	PTRRecord ptr = (PTRRecord) records[0];
	return ptr.getTarget().toString();
}

/**
 * Returns the family of an InetAddress.