package three;

public class C
   {
   /**
    * constructor
    * @param v velocity in m/s.
    */
   protected C( int v )
      {
      this.v = v;
      }

   private final int v;

   }
////////////////////////////////

package four;
import three.C;

class D extends C
   {
   /**
    * constructor
    */
   public D()
      {
      super(10); // ok to use C protected constructor via super.
      }

   void myMethod()
      {
      C c = new C(3); // not ok, C would have to be public for this to work.
      D d = new D(); // ok
      }

   }