USER-DEFINED CLASSES AND ADTS - Java Programming: From Problem Analysis to Program Design - page 529

The algorithm for the method main follows:

Method
main

1. Create the cash register—that is, create and initialize a CashRegister
object.
2. Create four dispensers—that is, create and initialize four objects of
type Dispenser . For example, the statement:

Dispenser candy = new Dispenser(100, 50);
creates a dispenser object, candy , to hold the candies. The number
of items in the dispenser is 100 , and the cost of an item is 50 cents.
3. Declare additional variables as necessary.
4. Show the selection; call the method showSelection .
5. Get the selection.
6. While not done (a selection of 9 exits the program):
a. Sell the product; call the method sellProduct .
b. Show the selection; call the method showSelection .
c. Get the selection.
The definition of the method main follows:

8

public static void main(String[] args)
{

CashRegister cashRegister = new CashRegister(); //Step 1

Dispenser candy = new Dispenser(100, 50); //Step 2

Dispenser chips = new Dispenser(100, 65); //Step 2

Dispenser gum = new Dispenser(75, 45); //Step 2

Dispenser cookies = new Dispenser(100, 85); //Step 2

int choice; //variable to hold the selection //Step 3

showSelection(); //Step 4

choice = console.nextInt(); //Step 5

while (choice != 9) //Step 6

{

switch (choice) //Step 6a

{
case 1:
sellProduct(candy, cashRegister);
break ;

case 2:
sellProduct(chips, cashRegister);
break ;