[crazydeo]

Here you go!!

Code:

public class Calculation 
{
	private double priceDouble, subTotalDouble, taxDouble, 
	shippingDouble, totalDouble;
	private int quantityInteger;
	private static double grandTotalDouble;
	private static int totalNumberOfOrdersInteger;
	
	public Calculation()
	{
	
	}
	
	public Calculation(int quantityNewInteger, double priceNewDouble)
	{
		setQuantity(quantityNewInteger);
		setPrice(priceNewDouble);
		calculate();
	}
	
	private void setQuantity(int quantityNewInteger)
	{
		//assign public variable to private
		quantityInteger = quantityNewInteger;
	}
	private void setPrice(double priceNewDouble)
	{
		//assign public variable to private
		priceDouble = priceNewDouble;
	}
	private void calculate()
	{
		final int SHIPPING_RATE_INTEGER = 1;
		final double TAX_RATE_DOUBLE = 0.0825;
		
		
		//calculate the subTotal of the order
		subTotalDouble = quantityInteger * priceDouble;
		//calculate the shipping of the order
		shippingDouble = SHIPPING_RATE_INTEGER * quantityInteger;
		//calculate the Tax of the order
		taxDouble = subTotalDouble * TAX_RATE_DOUBLE;
		//calculate the Total including shipping and tax of the order
		totalDouble = taxDouble + subTotalDouble + shippingDouble;
		// calculate the total of all orders
		//and the number of orders processed
		grandTotalDouble += totalDouble;
		totalNumberOfOrdersInteger++;
		
	}
	
	public double getQuantity()
	{
		//returning quantity
		return quantityInteger;
		
	}
	
	public double getPrice()
	{
		//returning price
		return priceDouble;
	}
	
	public double getSubTotal()
	{
		//returning subTotal
		return subTotalDouble;
		
	}
	
	public double getShipping()
	{
		//returning shipping
		return shippingDouble;
		
	}
	
	public double getTax()
	{
		//returning Tax
		return taxDouble;
		
	}
	
	public double getTotal()
	{
		//returning grand total of orders
		return totalDouble;
	}
	
	public double getGrandTotal()
	{
		//returning grand total of orders
		return grandTotalDouble;
	}
	
	public int getNumberOfOrders()
	{
		//return total number of orders processed
		return totalNumberOfOrdersInteger;
	}	
}