discountorder.java

ssd3 java编程 EXAM1 原样上传即可

import  java.util.*;

/**
 * This class models extend class {@link Order} adding the
 * following information:
 * <ol>
 *   <li> The strategy of discount applied to this order </li>
 * </ol>
 *
 * @author iCarnegie
 * @version  1.0.0
 * @see DiscountStrategy
 */
public class DiscountOrder extends Order {

	/* The discount strategy applied to this order */
	private DiscountStrategy discountStrategy;
	
	/**
	 * Creates a <code>DiscountOrder</code> object with a cash discount
	 *
	 * @param initCustomer  the customer that place the order
	 * @param initDate  the date of the order
	 * @param initDiscountStrategy the discount strategy applied to this order
	 */
	public DiscountOrder(
		Customer initCustomer,
		Date initDate,
		DiscountStrategy initDiscountStrategy) {
	
		super(initCustomer, initDate);
		discountStrategy = initDiscountStrategy; 
	}
	
	/**
	 * Returns the {@link DiscountStrategy} object of this order.
	 *
	 * @return  the {@link DiscountStrategy} object of this order.
	 */
	public DiscountStrategy  getDiscountStrategy()  {

		return  discountStrategy;
	}
	
	/**
	 * Modifies the {@link DiscountStrategy} object of this order.
	 *
	 * @param newDiscountStrategy  the new {@link DiscountStrategy} object of
	 *                             this order.
	 */
	public void  setDiscountStrategy(DiscountStrategy newDiscountStrategy)  {

		discountStrategy = newDiscountStrategy;
	}
	
	/**
	 * Returns the discounted cost of the order.
	 *
	 * @return  the discounted cost of the order.
	 */
	public double getTotalCostAfterDiscount() {
	
		/* PLACE YOUR CODE HERE */
	
		return 0.0; // REMOVE; USED SO THIS FILE COMPILES
	}
	
	/**
	 * Returns the string representation of this order.
	 *
	 * @return  the string representation of this order.
	 */
	public String  toString()  {

		/* PLACE YOUR CODE HERE */

		return  ""; // REMOVE; USED SO THIS FILE COMPILES
	}
}