computer science

package shipping; public interface IDockyard { /** * Adds a Container to the dockyard. * <p> * This method assumes there is no maximum number of containers that the dockyard can hold. * The implementation needs to be able to handle any number of containers. * * @param IContainer a container * @see IContainer */ public void addContainer(IContainer container); /** * Loads a truck with the next container available based on the truck's destination. * <p> * This methods adds the container to the dockyard in an efficient organized way so that containers can be * loaded onto trucks later in a very efficient manner based on the truck's destination. * * @param ITruck A truck used to load a single container. * @return A boolean value indicating whether or not the truck was loaded. * @see ITruck */ public boolean loadTruck(ITruck truck); /** * Counts the number of containers in the overall dockyard. * <p> * The implementation needs to be able to return the total number of containers currently stored in the dockyard. * * @return The total number of containers in the dockyard. */ public int containerCount(); /** * Counts the number of containers in the overall dockyard. * <p> * The implementation needs to be able to return the total number of containers currently stored in the dockyard. * * @param String destination city * @return The total number of containers in the dockyard. */ public int containerCount(String destinationCity); /** * Prints the details of the current dockyard status. * <p> * This method prints the total number of containers and then the number of containers destined for each city. * * @return Nothing. */ public void printDetails(); }