import javax.swing.JOptionPane;
import java.net.InetAddress;
import java.net.UnknownHostException;
class ResolverNombre {
    public static void main(String [] args) {
      String nodo=
          JOptionPane.showInputDialog(null,"Nombre maquina");
      if (nodo!=null) {
        try {
          InetAddress ip=InetAddress.getByName(nodo);
          JOptionPane.showMessageDialog(null,ip.toString());
        } catch (UnknownHostException excepcion ){
          JOptionPane.showMessageDialog(null,"Nombre no resuelto"); 
 
        }
      }
    }

}