orderitem.java

ssd3 exercise3正确的答案啊。

public class OrderItem 
{
	private Product product;
	private int quantity;
	public OrderItem(Product initialProduct,
		int initialQuantity)
	{
		product=initialProduct;
		quantity=initialQuantity;
	}
	public Product getProduct()
	{
		return product;
	}
	public int getQuantity()
	{
		return quantity;
	}
	public void setQuantity(int newQuantity)
	{
		quantity=newQuantity;
	}
	public double getValue()
	{
		return quantity*product.getPrice();
	}
	public String toString()
	{
		return getQuantity()+" "+product.getCode()+" "+product.getPrice();
	}
}