java get hostname

import java.net.InetAddress;
import java.net.UnknownHostException;
class Inet {
public static void main(String args[]){
	String hostname = "Unknown";

	try
	{
		InetAddress addr;
		addr = InetAddress.getLocalHost();
		hostname = addr.getHostName();
		System.out.println(hostname);
	}
	catch (UnknownHostException ex)
	{
		System.out.println("Hostname can not be resolved");
	}
}
}