Hi I have coded the following class which is ment to extend the registeredList class (shown in my previous post) but I get an error when trying to run the program, it says

Error (7) constructor RegisteredList() not found in class AirTrafficControl.RegisteredList.

Any ideas any one?

Code:
public class CirclingList extends RegisteredList
{
    //--------------------------------------------------------------------------

    public CirclingList(int maxPlanes)
    {
        list = new Airplane[maxPlanes];

        // initialise list
        for (int i = 0; i < list.length; i++)
        {
            list[i] = new Airplane("", 0);
        }
    }

    //--------------------------------------------------------------------------
}