Thread: need help with java progra,

i am trying to do this program. it compiles and everything but the numbers are not coming out right. any help would be greatly appreciated.
thank you

heres the problem.

Write a program that computes the tax and tip on a restaurant
bill. The program should use JOptionPane to ask the user to enter the
charge for the meal. The tax should be 6.75 percent of the meal
charge. The tip should be 15 percent of the total after adding the
tax. Display the meal charge, tax amount, tip amount, and total bill
on the screen.



import javax.swing.JOptionPane;

public class Bill
{
public static void main(String[] args)
{
double mealPurchase = 0;

mealPurchase = Double.parseDouble(JOptionPane.showInputDialog(nul l, " Enter meal total: "));

double mealTax = 0.0675;

double mealTip = 0.15;

double mealSubtotal = mealPurchase * mealTax;

double plusTip = mealPurchase * mealTip + mealSubtotal;

double mealTotal = plusTip + mealSubtotal;

JOptionPane.showMessageDialog(null, " Meal charge: " + mealPurchase +
"\nTax Amount: " + mealSubtotal +
"\nTip Amount: " + plusTip +
"\nMeal Total: " + mealTotal );

}

}

sorry.
i am trying to calculate the tax and tip and then show the total amount on a dialog box.
this is what i get when i run it entering 10.00 dollar meal purchase.

Meal charge: 10
Sales Tax: 0.0675 ( i need it to calculate the sales tax from the 10 dollars that i enter, but instaed it tells me the amount of the sales tax.
Tip Amount: 2.175 ( i need the tip amount after i add the meal charge and sales tax
Meal Total: 2.8499999 ( here i need the added amount of meal purchase + sales tax + tip amount)


i am not getting the right amount. and it starts with the sales tip since it doesn't calculate anything it just shows the tax that i input

calculation is your problem..
if im not wrong, if you try to multiply 10 to 0.0675 the answer would become 0.675 instead of 6.75 its because of the one zero added from your mealtax value instead of 0.675
try to change the value of your mealTax to 0.675, and this will might fix your problem