import java.net.*;

public class Test2 {

    public static void main(final String [] pArgs) throws Exception {

        for (final InetAddress addr : InetAddress.getAllByName("localhost")) {
            System.out.println("canonical: " + addr.getCanonicalHostName() + " - addr: " + addr.getHostAddress() + " - name: " + addr.getHostName());
        }

        final InetAddress localAddr = InetAddress.getLocalHost();

        System.out.println("local canonical: " + localAddr.getCanonicalHostName() + " - local addr: " + localAddr.getHostAddress() + " - local name: " + localAddr.getHostName());

    }
}