How do I calculate numbers with If statement if more than one condition is met?

Question

I have edited my code below with the changes I have made. Here is the output I am getting.

Please enter an item.imported bottle of perfume Please enter the price for imported bottle of perfume: 47.50 Would you like to continue to add items? (Type Y) for Yes and (Type N) for No.n Your cart contains the following at items with tax{imported box of chocolate=10.00, imported bottle of perfume=67.50} 67.50

The box of chocolate should be 10.50 and the imported bottle should be 54.65. I use the debug and saw that the total price variable I am using holds 10.50 but it looks like it changes back. Also, instead of reading the loop that has

 if (item.contains("imported") && item.contains("bottle"))

it reads

 else if (item.contains("imported"))

first. My full code is below.

public class SalesTax 
{
public static void main(String[] args) 
{
    // Input items for shopping cart
    HashMap<String, String> cart = new HashMap<String, String>();
    HashMap<String, String> shoppingcart = new HashMap<String, String>();

    // Create a Scanner
    Scanner input = new Scanner(System.in);

    // variables
    char done;

    //boolean goods;
    double totalprice = 0.00;
    double taxprice;

    // Pick items for list.
    do 
    {  
        System.out.print("Please enter an item.");
        String item = input.nextLine();

        System.out.print("Please enter the price for "+ item + ": ");
        String price = input.nextLine(); 

        double price1 = Double.parseDouble(price);
        totalprice += price1; 

        //System.out.println(String.format("%.2f",totalprice));
        String price2 = String.valueOf(price1);
        cart.put(item, price2);

        //determine if item will have additional tax
        if (item.contains("music"))
        {
             price1 = Double.parseDouble(price);
            taxprice = price1 * .10;

            totalprice = (totalprice + taxprice);

            //System.out.println(String.format("%.2f",totalprice));
            String newprice2 = String.valueOf(String.format("%.2f", price1 * 1.10));
            shoppingcart.put(item,newprice2);
        }
        else if (item.contains("imported"))
        {
             price1 = Double.parseDouble(price);
            taxprice = price1 * .05;

            totalprice = (totalprice + taxprice);

            //System.out.println(String.format("%.2f",totalprice));
            String newprice2 = String.valueOf(String.format("%.2f", totalprice));
            shoppingcart.put(item,newprice2);
        }
        if (item.contains("imported") && item.contains("bottle"))
        {
             price1 = Double.parseDouble(price);
            taxprice = price1 * (.05 + .10);

            totalprice = (totalprice + taxprice);

            //System.out.println(String.format("%.2f",totalprice));
            String newprice2 = String.valueOf(String.format("%.2f", totalprice));
            shoppingcart.put(item,newprice2);
        }
        else if(item.contains("bottle"))
        {
             price1 = Double.parseDouble(price);
            taxprice = price1 * .10;

            totalprice = (price1 + taxprice);

            //System.out.println(String.format("%.2f",totalprice));
            String newprice2 = String.valueOf(String.format("%.2f", price1 * 1.10));
            shoppingcart.put(item,newprice2);
        }
        else 
        {
            shoppingcart.put(item, price);
        }


        System.out.print("Would you like to continue to add items? (Type Y) for Yes and (Type N) for No.");
        done = input.nextLine().charAt(0);
    } while(Character.toUpperCase(done) == 'Y');

   System.out.println("Your cart contains the following at items with tax" + shoppingcart); //+ String.format("%.2f", totalprice));
   System.out.println(String.format("%.2f",totalprice));
}

}

As a side-bar: It is not a great idea to do arithmetic involving money using `double`, since floating point arithmetic is not exact. You should look into using `BigDecimal` instead. http://stackoverflow.com/questions/6320209/javawhy-should-we-use-bigdecimal-instead-of-double-in-the-real-world — Andy Turner, Aug 18 '14 at 17:16
If you use map that way you will replace items with the same name i.e. you can't buy the same item more than once but you still have to pay the full price. — Jimmy T., Aug 18 '14 at 18:14

But I'm Not A Wrapper Class · Answer 1 · 2014-08-18T17:28:40.947

2

Use the && operator. It's called the logical AND operator.

//if item contains both "imported" and "bottle"
if (item.contains("imported") && item.contains("bottle")){
    //code
}

How do I calculate numbers with If statement if more than one condition is met?

2 Answers2