I missed my last comp. sci. class and have fallen a little behind, could someone

Question

I missed my last comp. sci. class and have fallen a little behind, could someone please show me how to write a program for this?

The following table shows the price for coca, juice, and water:

Product

Price

coca

1.75

juice

2.50

Water

1.50

Write a program that asks the user to enter “coca”, “juice”, or “water”, and the amount of money that he/she puts into the vendor machine. The program then displays the message “ You ordered one bottle of …” and the corresponding change. For example, if the user enters “ coca” and 2 dollars, then your program displays:

“You ordered one bottle of Coca, and the change is 0.25 dollar.”

-Hint: if(input.equals("Coca"))...

Product

Price

coca

1.75

juice

2.50

Water

1.50

Explanation / Answer

//VendingMachine.java

import java.util.Scanner;

public class VendingMachine
{

public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);

System.out.println("Enter drink(coca, juice, water): ");
String drink = sc.nextLine();
System.out.println("Enter the amount to put into vending machine: ");
double money = sc.nextDouble();

double change = 0.0;
double number_bottles = 0;

if(drink.equals("coca"))
{
number_bottles = money/1.75;
change = money - 1.75*(int)number_bottles;
}
else if(drink.equals("juice"))
{
number_bottles = money/2.50;
change = money - 2.50*(int)number_bottles;
}
else if(drink.equals("water"))
{
number_bottles = money/1.50;
change = money - 1.50*(int)number_bottles;
}

System.out.println("You ordered " + (int)number_bottles + " bottle of "+ drink +", and the change is " + change + " dollar ");
}

}

/*
Output:

Enter drink(coca, juice, water):
coca
Enter the amount to put into vending machine:
4.0
You ordered 2 bottle of coca, and the change is 0.5 dollar
*/

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