import java.net.InetAddress;

public class PetaAlamat {
    public static void main(String[] args) throws Exception {
        // Alamat loopback tersedia tanpa menyentuh jaringan nyata
        InetAddress loopback = InetAddress.getLoopbackAddress();
        System.out.println("hostAddress loopback  : " + loopback.getHostAddress());
        System.out.println("isLoopbackAddress      : " + loopback.isLoopbackAddress());

        // Nama "localhost" diselesaikan lewat berkas hosts sistem operasi
        InetAddress lokal = InetAddress.getByName("localhost");
        System.out.println("getHostName            : " + lokal.getHostName());
        System.out.println("hostAddress localhost  : " + lokal.getHostAddress());
    }
}