如何在司机中显示班级总价？

Question

需要使用java类创建一个披萨店。我已经创建了一个类和驱动程序。一切都很好，但我真的不明白如何显示用户订购的比萨饼的总价和所有其他细节。

//Pizza class
import javax.swing.JOptionPane;

public class Pizza {

    private String crust;
    private boolean extraCheese;
    private boolean drink;
    private double price;
    private String [] toppings = new String[5];


    public Pizza() {//constructor

        this.crust = "Regular Crust";
        this.extraCheese = false;
        this.drink = false;
        this.price = 6.99;

    }

    public void setCrust(String crust) {//setter

        this.crust = crust;

    }

    public void setExtraCheese(boolean extraCheese) {//setter

        this.extraCheese = extraCheese;

    }

    public void setDrink(boolean drink) {//setter

        this.drink = drink;

    }

    public void setPrice(double price) {//setter

        this.price = price;

    }

    public String getCrust() {//getter

        return this.crust;

    } 

    public boolean getExtraCheese() {//getter

        return this.extraCheese;
    }

    public boolean getDrink () {//getter

        return this.drink;

    }


    public void selectCrust() {

        crust = JOptionPane.showInputDialog(null, "What type of crust do you want? \nOriginal \nThin \nCheese Stuffed \nDeep Dish \nPlease, type a full name of crust.");

    }

    public void addExtraCheese(String decision) {

        if(decision.equalsIgnoreCase("Yes")) {

            extraCheese = true;
            price = price+0.30;
            price = total1;

        }

    }

    public void addDrink (String decision) {

        if(decision.equalsIgnoreCase("Yes")) {

            drink = true;
            price = price+1.39;
        }

    }

    public void addToppings() {

        String [] toppingsList  = {"Pepperoni", "Onions", "Mushrooms", "Pepper", "Sausage"};
        String Answ;
        String Total = "";
        double price  = 0;
        int index = 0;
        do {
            String temp = "";
            toppings[index] = JOptionPane.showInputDialog(null, "Please, select toppings from the list: \nEnter the number \n1) "+ toppingsList[0] +"\n2) "+ toppingsList[1] +"\n3) "+ toppingsList[2] +"\n4) "+toppingsList[3]+"\n5) "+toppingsList[4]);

            if (toppings[index].equals("1")) {
                temp = temp + toppingsList[0] + ", ";
                price = price+0.20;
            }       
            if (toppings[index].equals("2")) {
                temp = temp + toppingsList[1] + ", ";
                price = price+0.20;
            }   
            if (toppings[index].equals("3")) {          
                temp = temp + toppingsList[2] + ", ";
                price = price+0.20;
            }   
            if (toppings[index].equals("4")) {          
                temp = temp + toppingsList[3] + ", ";
                price = price+0.20;
            }
            if (toppings[index].equals("5")) {
                temp = temp + toppingsList[4] + ", ";
                price = price+0.20;
            }
            index++;
            Total = Total+temp; 
            Answ = JOptionPane.showInputDialog(null, "Would you like to add one more topping? \nYes/No");//asks if the user wants to select one more service
            } while (Answ.equalsIgnoreCase("Yes") );

        //JOptionPane.showMessageDialog(null, String.format("Chosen Toppings are: "+Total+" - $%.2f",price));
        public double getPrice() {//getter

        return this.price ;
    }
    }

}

驱动程序

import javax.swing.JOptionPane;

public class Driver {

    public static void main (String[] args) {

        Pizza NotRegular = new Pizza();


        double price;
        double TotalPrice;
        JOptionPane.showMessageDialog(null, "Welcome to our Pizza Parlor!");
        NotRegular.selectCrust();
        String decision = JOptionPane.showInputDialog(null, "Would you like to add extra cheese?");
        NotRegular.addExtraCheese(decision);
        String decision1 = JOptionPane.showInputDialog(null, "Would you like to add drink?");
        NotRegular.addDrink(decision1);
        NotRegular.addToppings();


    }

}

Answer 1

public class Driver {

    public static void main (String[] args) {

        ... // Your previous code
        JOptionPane.showMessageDialog(null, "Price: " + NotRegular.getPrice() + "  Crust: " + NotRegular.getCrust());

    }
}

这将打印一个显示价格和cruts的选项窗格。使用类似的方式来获取任何其他东西。基本上，您想要调用/调用getter方法（返回属性并在其前面有注释//getters的方法）。

此外，您可以详细了解getters和setters here。