computer science

ITruck.java

package shipping;

public interface ITruck {

	/**
	* The truck's registratrion number.
	* <p>
	* @return A value that represents the truck's registration number.
	*/

	public String registration();

	/**
	* Returns the code that represents the destination city for the truck.
	* <p>
	* @return A string value indicating the destination for the truck.
	*/

	public String destinationCity();

	/**
	* Adds a container to the truck.
	* <p>
	* The implementation should only add the container if there is not already a container on the truck.
	* @return True if the container was added and False otherwise.
	*/

	public boolean addContainer(IContainer container);

	/**
	* Returns the container from the truck and removes it from the truck.
	* <p>
	* @return A container reference for the container object being removed from the truck. If there is no container on the truck, the return value is null.
	*/

	public IContainer offloadContainer();

	/**
	* Returns a boolean value indicating whether there is a container on the truck.
	* <p>
	* @return True if the truck has a container and False otherwise.
	*/

	public boolean hasContainer();

	/**
	* Prints the truck registration, destination city, and the truck contents.
	* <p>
	* @return Nothing.
	*/

	public void printDetails();

}