FruitShop

package programmingBasics;

import java.util.Scanner;

public class FruitShop {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String fruit = scanner.nextLine();
        String day = scanner.nextLine();
        double num = Double.parseDouble(scanner.nextLine());
        double price = 0.0;

        boolean isValid = (fruit.equals("banana") || fruit.equals("apple") ||
                fruit.equals("orange") || fruit.equals("grapefruit") ||
                fruit.equals("kiwi") || fruit.equals("pineapple")
                || fruit.equals("grapes") ||

                day.equals("Monday")
                || day.equals("Tuesday") || day.equals("Wednesday")
                || day.equals("Thursday") || day.equals("Friday")
                || day.equals("Saturday") || day.equals("Sunday"));

        if (isValid = false) {
            System.out.println("error");
        }
        if (fruit.equals("banana")) {
            if (day.equals("Monday") || day.equals("Tuesday")
                    || day.equals("Wednesday") || day.equals("Thursday") ||
                    day.equals("Friday")) {
                price = num * 2.50;

            } else if (day.equals("Saturday") || day.equals("Sunday")) {
                price = num * 2.70;
            }

        }
        if (fruit.equals("apple")) {
            if (day.equals("Monday") || day.equals("Tuesday") ||
                    day.equals("Wednesday") || day.equals("Thursday") ||
                    day.equals("Friday")) {
                price = num * 1.20;

            } else if (day.equals("Saturday") || day.equals("Sunday")) {
                price = num * 1.25;

            }
        } else if (fruit.equals("orange")) {
            if (day.equals("Monday") || day.equals("Tuesday") ||
                    day.equals("Wednesday") || day.equals("Thursday") ||
                    day.equals("Friday")) {
                price = num * 0.85;

            } else if
            (day.equals("Saturday") || day.equals("Sunday")) {
                price = num * 0.90;


            }
        } else if (fruit.equals("grapefruit")) {
            if (day.equals("Monday") || day.equals("Tuesday") ||
                    day.equals("Wednesday") || day.equals("Thursday") ||
                    day.equals("Friday")) {
                price = num * 1.45;

            } else if (day.equals("Saturday") || day.equals("Sunday")) {
                price = num * 1.60;


            }
        } else if (fruit.equals("kiwi")) {
            if (day.equals("Monday") || day.equals("Tuesday")
                    || day.equals("Wednesday") || day.equals("Thursday") ||
                    day.equals("Friday")) {
                price = num * 2.70;

            } else if (day.equals("Saturday") || day.equals("Sunday")) {
                price = num * 3.00;

            }
        } else if (fruit.equals("pineapple")) {
            if (day.equals("Monday") || day.equals("Tuesday") ||
                    day.equals("Wednesday") || day.equals("Thursday") ||
                    day.equals("Friday")) {
                price = num * 5.50;

            } else if (day.equals("Saturday") || day.equals("Sunday")) {
                price = num * 5.60;

            }
            } else if (fruit.equals("grapes")) {
                if (day.equals("Monday") || day.equals("Tuesday") ||
                        day.equals("Wednesday") || day.equals("Thursday") ||
                        day.equals("Friday")) {
                    price = num * 3.85;

                } else if (day.equals("Saturday") || day.equals("Sunday")) {
                    price = num * 4.20;
                }
            }

                System.out.printf("%.2f%n", price);
                System.out.println("error");
            }
        }