exercise 3.product.java

CMU SSD3 课程完整答案（除EXAM）

/**
 * This class models a generic product in the store.
 * 
 * @author Neil
 * @version 1.0.0
 */
public class Product {

	protected String code;
	protected String description;
	protected double price;

	/**
	 * Getter of the property <tt>code</tt>
	 * 
	 * @return Returns the code.
	 */
	public String getCode() {
		return code;
	}

	/**
	 * Getter of the property <tt>description</tt>
	 * 
	 * @return Returns the description.
	 */
	public String getDescription() {
		return description;
	}

	/**
	 * Getter of the property <tt>price</tt>
	 * 
	 * @return Returns the price.
	 */
	public double getPrice() {
		return price;
	}

	/**
	 * Constructor that initializes the instance variables code, description,
	 * and price.
	 * 
	 * @param initialCode
	 * @param initialDescription
	 * @param initialPrice
	 */
	public Product(String initialCode, String initialDescription,
			double initialPrice) {
		code = initialCode;
		description = initialDescription;
		price = initialPrice;
	}

	/**
	 * Overrides the method equals in the class Object. Two Product objects are
	 * equal if their codes are equal.
	 * 
	 * @param product
	 * @return Return <tt>true</tt> if the codes are equal. Return
	 *         <tt>false</tt> if the codes are not equal.
	 */
	public boolean equals(Product product) {
		if (code == product.getCode())
			return true;
		return false;
	}

	/**
	 * Overrides the method toString in the class Object. Returns the string
	 * representation of a Product object.
	 * 
	 * @return Returns the string representation of a Product object like
	 *         <tt>code_description_price</tt>.
	 */
	public String toString() {
		return code + "_" + description + "_" + price;
	}
}