Question

Hi. Could you help me with the code below? I need to validate the code below, using expressions that can carry out the actions or that make appropriate changes to the program’s state, using conditional and iterative control structures that repeat actions as needed. The unit measurement is missing from the final output and I need it to offer options to lbs, oz, grams, tbsp, tsp, qt, pt, and gal. & fl. oz. Can this be added? The final output should show the ingredients with the unit of measurement and it should show the cost per serving. Please help. Everything I've done just breaks the code and gives me errors.

///////////////////////////////////

import java.util.ArrayList;

import java.util.Scanner;

public class Recipe {

   // Declare variables and assign default values
   private String recipeName;

   double servings; // Using double to accommodate partial servings.

   ArrayList<String> recipeIngredients;// ArrayList stores the text of the ingredient added

   private double totalRecipeCalories;;

   private double totalCost;

   public Recipe() {

       this.recipeName = ""; // initialized to a default value

       this.servings = 0.0; // variable is initialized to a default value

       this.recipeIngredients = (null); // ArrayList is written as null- ready to be populated by strings

       this.totalCost = 0.0;
       this.totalRecipeCalories = 0;
       recipeIngredients = new ArrayList<>();

   }

   // Overloaded Constructor
   public Recipe(String recipeName, double servings, ArrayList<String> recipeIngredients, double totalRecipeCalories,
           double totalCost) {

       this.recipeName = recipeName;

       this.servings = servings;

       this.totalRecipeCalories = totalRecipeCalories;

       this.recipeIngredients = recipeIngredients;

       this.totalCost = totalCost;

   }

   // Accessors and mutators {setters and getters)
   // @param setRecipeName value
   public void setRecipeName(String recipeName) {
       this.recipeName = recipeName;
   }

   // @return value
   public String getrecipeName() {
       return recipeName;
   }

   // @param getservings value
   public void setServings(int servings) {
       this.servings = servings;
   }

   // @return getservings value
   public double getservings() {
       return servings;
   }

   // sets the ingredients held by the array
   public void setrecipeIngredients(ArrayList<String> recipeIngredients) {
       this.recipeIngredients = recipeIngredients;
   }

   // @return returns the information in the list
   public ArrayList<String> getrecipeIngredients() {
       return recipeIngredients;
   }

   // @return the value for the
   public double getTotalRecipeCalories() {
       return totalRecipeCalories;

   }

   public void setTotalRecipeCalories(double totalRecipeCalories) {
       this.totalRecipeCalories = totalRecipeCalories;
   }

   public double getTotalCost() {
       return totalCost;
   }

   public void setTotalCost(double totalCost) {
       this.totalCost = totalCost;
   }

   // constructor
   public Recipe(String recipeName, int servings, ArrayList<String> recipeIngredients, double totalRecipeCalories, double totalCost) {
       this.recipeName = recipeName;
       this.servings = servings;
       this.recipeIngredients = recipeIngredients;
       this.totalRecipeCalories = totalRecipeCalories;
       this.totalCost = totalCost;
   }

   // print recipe method will help print recipe
   public void printRecipe() {
       double singleServingCalories;
       singleServingCalories = this.totalRecipeCalories / this.servings;
       System.out.println("Recipe: " + recipeName);// Prints recipeName on standard output.
       System.out.println("Serves: " + servings);// Prints servings on standard output.
       System.out.println("Ingredients:");
       for (String ingredient : recipeIngredients) {
           System.out.println(ingredient);
       }

       System.out.println("Each serving has " + singleServingCalories + " Calories.");
       System.out.println("Total cost of recipe is: $"+totalCost*servings);
       // This expression outputs the calories per serving
   }
   // method that represents a recipe to be called on

   public static Recipe createNewRecipe() {
       double totalRecipeCalories = 0.0; // For decimal values, this data type is generally the default choice
       // this variable will hold an array of the specified type
       ArrayList<String> recipeIngredients = new ArrayList<String>();
       boolean addMoreIngredients = true;// this data type for simple flags that track true/false conditions.

       Scanner scnr = new Scanner(System.in);
       System.out.println("Please enter the recipe name: ");
       // Message prompts user to enter recipe name
       String recipeName = scnr.nextLine();// needs user input
       System.out.println("Please enter the number of servings: ");
       // Asks user to enter number of servings
       int servings = scnr.nextInt();// needs user input
       scnr.nextLine();
       // the statements inside the do block are always executed at least once.
       // The do loop will evaluate the statements inside the loop and then the boolean
       // expression.
       do {
           // prompts the user to enter the ingredient or type "end" to end the program
           System.out.println("Enter the ingredient name or type end if you are finished entering ingredients: ");

           String ingredientName = scnr.nextLine();// needs user input

           if (ingredientName.toLowerCase().equals("end")) { // user enters word "end" addMoreIngredients will result
                                                               // to false

               addMoreIngredients = false;// looping will end if user types "end"

           } else {
               recipeIngredients.add(ingredientName); // ArrayList of ingredient accessed and added

               System.out.println("Please enter the ingredient amount: ");
               // Asks user to enter the amount used
               float ingredientAmount = scnr.nextFloat(); // needs user input

               System.out.println("Please enter the ingredient Calories: ");
               // Asks user to enter the amount used
               int ingredientCalories = scnr.nextInt();// needs user input
               totalRecipeCalories += ingredientCalories * ingredientAmount;
               // Calculates the total Calories
               scnr.nextLine();
           }

       } while (addMoreIngredients);
       // Do-while-loop continues if condition is not false and will continue to run
       // the code until user types "end"
       System.out.print("Pleaae enter the total cost of recipe: ");
       double cost = scnr.nextDouble();
       Recipe recipe1 = new Recipe(recipeName, servings, recipeIngredients, totalRecipeCalories,cost);
       scnr.close();

       return recipe1;

   }

}

/////////////////////

import java.util.ArrayList;

public class RecipeTest {

   /**
   * @param args
   * the command line arguments
   */
   public static void main(String[] args) {
       // Create first recipe using constructor and setter methods
       ArrayList<String> recipeIngredients = new ArrayList<>();
       recipeIngredients.add("Peanut butter");
       recipeIngredients.add("Jelly");
       recipeIngredients.add("Bread");
       Recipe recipe1 = new Recipe("Peanut butter & jelly sandwich", 2, recipeIngredients, 300, 10.0);

       System.out.println("RECIPE 1");
       recipe1.printRecipe();
       System.out.println();

       // Now change some of the values using mutator methods
       recipe1.setRecipeName("Turkey sandwich");
       recipe1.setServings(5);

       recipe1.setTotalRecipeCalories(500);
       System.out.println(); // blank line
       System.out.println("RECIPE 1 (Modified)");

       // printRecipe() will show these values have changed but
       // recipeIngredients was not modified
       recipe1.printRecipe();

       System.out.println(); // blank line
       System.out.println("RECIPE 2");
       // Create second recipe using our static createNewRecipe() method
       // This is similar to a well-known design pattern called Factory
       Recipe recipe2 = Recipe.createNewRecipe();
       // No need to set hard-coded values here as createNewRecipe() will
       // prompt the user for ingredient info
       recipe2.printRecipe();

       // Create second recipe using our static createNewRecipe() method
       // This is similar to a well-known design pattern called Factory
   }

}

///////////

Thanks

Answer 1

Solution:

There is no error / issue in your code. It executes fine. Please find below the snapshot.

Also coming to your question if you can add unit measurements; no it will be very complicated and depends on your requirement. As units of measurements can differ from one kind of ingredient to another (i.e. if it is solid or liquid).

D Recipe.java RecipeTestjava 3 ArrayList<string> recipeIngredients new ArrayList()(); recipeIngredients.add( "Peanut butter"); recipeIngredients.add("Jelly"); recipeIngredients.add(" Bread"); Recipe recipe new Recipe("Peanut butter & jelly sandwich", 12 13 14 16 2, recipe!ngredients, 300, 10.0); System.out.println("RECIPE 1"); recipel.printRecipe); 18 19 E ConsoleProblems Debug Shell Debug Servers RecipeTest [Java Application] C:\Program FilesJava jre1.8.0_201\bin\javaw.exe (Apr 28, 2019, 2:05:15 PM RECIPE 1 Recipe: Peanut butter & jelly sandwich Serves: 2.0 Ingredients: Peanut butter Jelly Bread Each serving has 150.0 Calories Total cost of recipe is: $20.0 RECIPE 1 (Modified) Recipe: Turkey sandwich Serves: 5.0 Ingredients: Peanut butter Jelly Bread Each serving has 100.0 Calories Total cost of recipe is: $50.0