GUI help

[jvcv]

How to implement GUI to my code? I know how to make the buttons and etc i just dont know how to "connect them together"
thanks

`import java.util.Scanner;

public class Pizza {

public static void main(String[] args) {
    Scanner inScan = new Scanner(System.in);
    int choice, choiceEnd, howMany, pizzaNumber;
    double totalCost, sPizzaCost, eCheese, pep, gPeppers, mushrooms, sausage, onion;
    String pizzaName, pizzaSize;
    totalCost = 0;
    sPizzaCost = 0;

     double thin , thick;

    System.out.println("Would you like to order a pizza?");
    System.out.println("1. Yes");
    System.out.println("2. No");
    System.out.println();
    choiceEnd = inScan.nextInt();
    while (choiceEnd < 2)
        if (choiceEnd == 1) {
            System.out.println("Which pizza size do you want?");
            System.out.println("1. Thin  (7.99)");
            System.out.println("2. Thick (9.99)");

            pizzaName = "";
            choice = inScan.nextInt();
            if (choice == 1) {
                sPizzaCost = 7.99;
                pizzaNumber = 1;
                pizzaName += " Thin ";
            }
            if (choice == 2) {
                sPizzaCost = 9.99;
                pizzaNumber = 1;
                pizzaName += "Thick ";
            }

            System.out.println("Would you like Pepperoni on your pizza?");
            System.out.println("1. Yes");
            System.out.println("2. No");
            choice = inScan.nextInt();
            if (choice == 1) {
                pep = 2.25;
                sPizzaCost = sPizzaCost + pep;
                pizzaName += "with Pepperoni ";
            }
            System.out
                    .println("Would you like Green Peppers on your pizza?");
            System.out.println("1. Yes");
            System.out.println("2. No");
            choice = inScan.nextInt();
            if (choice == 1) {
                gPeppers = 2.37;
                sPizzaCost = sPizzaCost + gPeppers;
                pizzaName += "with Green Peppers ";
            }
            System.out.println("Would you like Mushrooms on your pizza?");
            System.out.println("1. Yes");
            System.out.println("2. No");
            choice = inScan.nextInt();
            if (choice == 1) {
                mushrooms = 2.05;
                sPizzaCost = sPizzaCost + mushrooms;
                pizzaName += "with Mushrooms ";
            }
            System.out.println("Would you like Sausages on your pizza?");
            System.out.println("1. Yes");
            System.out.println("2. No");
            choice = inScan.nextInt();
            if (choice == 1) {
                sausage = 2.75;
                sPizzaCost = sPizzaCost + sausage;
                pizzaName += "with Sausage ";
            }
            System.out.println("Would you like Onions on your pizza?");
            System.out.println("1. Yes");
            System.out.println("2. No");
            choice = inScan.nextInt();
            if (choice == 1) {
                onion = 1.50;
                sPizzaCost = sPizzaCost + onion;
                pizzaName += "with Onions ";
            }


            System.out.println();
            System.out.print("Pizza Order");
            System.out.println("Amount Due");
        }

}`

[JamesCherrill]

Step one is to disentagle your current GUI from the code about pizzas that you will need in the GUI version. eg at lines 23-35 you could create new method eg choseSize(int size) and move the code from lines 24-35 into it, so the code now reads:

choice = inScan.nextInt();
choseSize(choice);

After you have done that for all th existing code it will be straight forward to call those same methods from a JButton or whatever GUI design you chose.

This is an example of separation of "model" and "view", which is a key architectural pattern seen throught Java

[stultuske]

somehow I think the question is more related to: how do I add an action to my buttons, and call it by clicking on them?

[jvcvfla]

Hi
thanks
I know how to create the buttons and make them do something.
Just not sure how for example

System.out.println("Would you like to order a pizza?");
System.out.println("1. Yes");
System.out.println("2. No");

create a button to "yes" and one for "no" and when i click on them it will do what the code tells it to do.

as i said i know how to create the buttons i just dont know how to link it to my code.

[JamesCherrill]

Looks like stultuske was tight (again)

Here's a tutorial on how to make things happen when someone clicks a button. Once you've got that, follow the advice in my earlier post, putting the calls to your new methods in the actionPerformed.