Question

import java.util.Scanner;

public class Pizza {

    public String sizeOfPizza;
    public int numToppings;

    public Pizza (){

    }

    public void setValues (String size, int toppings){
        sizeOfPizza = size;
        numToppings = toppings;
    }

    public double getSizePrice(){
        double price = 0;
        if (sizeOfPizza == "Large"){
            price = 14;
        }
        else if (sizeOfPizza == "Medium"){
            price = 12;
        }
        else if (sizeOfPizza == "Small"){
            price = 10;
        }
        return price;
    }

    public int getToppings(){
        return numToppings;
    }

    public double calcCost(){
        int x = getToppings();
        x = x*2;
        double y = getSizePrice();
        double cost = x + y;
        return cost;
    }

    public void output(){
        System.out.printf("Your pizza costs $%s", calcCost());
    }

    public static void main(String[] args) {
        Scanner keyboard = new Scanner(System.in);
        int toppings = 0;
        System.out.println("Enter size of pizza: ");
        String sizeInput = keyboard.nextLine();

        System.out.println("Enter No. of cheese: ");
        int toppingInput = keyboard.nextInt();
        toppings += toppingInput;

        System.out.println("Enter No. of pepperoni: ");
        toppingInput = keyboard.nextInt();
        toppings += toppingInput;

        System.out.println("Enter No. of ham: ");
        toppingInput = keyboard.nextInt();
        toppings += toppingInput;

        System.out.println(toppings);

        Pizza pizzaObject = new Pizza();
        pizzaObject.setValues(sizeInput, toppings);
        pizzaObject.output();
    }
}

如何找出披萨的总价？由于某种原因，if语句不会检查字符串的大小。

我想得到披萨的总价，但我似乎无法得到披萨大小的价格。

我是编程新手，任何帮助都将不胜感激。感谢。

Answer 1

比较String时 - 使用方法equals： string1.equals（string2），而不是string1 == string2

如果语句没有正确检查字符串是否相等

1 个答案: