ive doing a homework which we need to provide buttons (GUI) for a vending machine.
the vending machine takes dollars, quaters, dimes, and nickels, and the vending machine has drinks (60 cents) and snacks (45 cents).
we done a code were it does work through "SCANNER", but now we have to create a GUI for it.
/**
* VendingMachineCUI: A program that emulates a vending machine. It uses a
* VendingMachine object to represent a vending machine, and interacts with
* the user through the console.
*/
import java.util.*; // for Scanner class
public class VendingMachineCUI
{
public static void main (String[] args)
{
char action; // Store user's input characters
String strDrinkAvailable, // whether drink is sold out
strSnackAvailable; // whether snack is sold out
Change change; // Used to keep a change
// Create a Scanner object for input
Scanner keyboard = new Scanner (System.in);
// Create a vending machine object
VendingMachine vm = new VendingMachine ();
while (true)
{
if (vm.isItemAvailable (VendingMachine.ITEM_TYPE_DRINK))
strDrinkAvailable = "";
else
strDrinkAvailable = " (sold out)";
if (vm.isItemAvailable (VendingMachine.ITEM_TYPE_SNACK))
strSnackAvailable = "";
else
strSnackAvailable = " (sold out)";
// Display the menu
System.out.println (
"A - Drink" + strDrinkAvailable + "\n" +
"B - Snack" + strSnackAvailable + "\n\n" +
"D - Enter a dollar\n" +
"Q - Enter a quarter\n" +
"M - Enter a dime\n" +
"N - Enter a nickel\n\n" +
"R - Return change\n\n");
// Display the amount entered in the machine
System.out.println ("Amount available: " + vm.getAmountAvailable () + "\n\n");
// Get user's action
System.out.print ("Your action: ");
action = keyboard.next ().charAt (0);
action = Character.toUpperCase (action);
// Process
switch (action)
{
case 'A':
if (! vm.isItemAvailable (VendingMachine.ITEM_TYPE_DRINK))
System.out.println ("Sorry, it's sold out");
else if (! vm.isMoneyEnough (VendingMachine.ITEM_TYPE_DRINK))
System.out.println ("Sorry, not enough money for the purchase");
else if (vm.buyItem (VendingMachine.ITEM_TYPE_DRINK))
System.out.println ("Here is your drink");
break;
case 'B':
if (! vm.isItemAvailable (VendingMachine.ITEM_TYPE_SNACK))
System.out.println ("Sorry, it's sold out");
else if (! vm.isMoneyEnough (VendingMachine.ITEM_TYPE_SNACK))
System.out.println ("Sorry, not enough money for the purchase");
else if (vm.buyItem (VendingMachine.ITEM_TYPE_SNACK))
System.out.println ("Here is your snack");
break;
case 'D':
vm.inputDollar ();
break;
case 'Q':
vm.inputQuarter ();
break;
case 'M':
vm.inputDime ();
break;
case 'N':
vm.inputNickel ();
break;
case 'R':
change = vm.makeChange ();
// Display the coins to the user
System.out.println (
"# of quarters: " + change.getQuarters () + "\n" +
"# of dimes: " + change.getDimes () + "\n" +
"# of nickles: " + change.getNickels () + "\n");
break;
default:
System.out.println ("Sorry, " + action + " is an invalid option");
break; // simply do nothing for a invalid input
} // end of switch
System.out.println ("\n"); // get a vertical space
} // end of while
}
}thats the scanner one, it does work (since i have other programs which displays the change, and everyything else).
but i dont know where to start...
ive done one program with GUI, and was still strugglin about it.
i know the basics, such as...
inputing
import java.awt.*;
import java.awt.event.*;to activate the whole "event" thing through the eAction..
any help will be appreciateed...
thanks.
