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Java Active Learning WorkBook: Scaffolded Programming Activities Beyond The Basics.

Celine Latulipe, Devon Blewett, Lara De Leon

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Section 13.1 Starter Level

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Multidimensional Arrays
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Subsection 13.1.1 Overview

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In this exercise, you will work with a Java program that simulates a restaurant menu. A 2D array stores multiple dishes, each of which are put in 3 different categories: appetizers, entrees, and desserts. You must implement displayMenu and displayCategory. These methods are responsible for displaying the entire menu and specific categories of the menu, respectively.
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Subsection 13.1.2 2D Array

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The menu 2D array is an array of String, where each sub-array represents a category of the menu. The first element of each sub-array is the name of the category.
  • menu[0][0] contains "Appetizers", menu[1][0] contains "Entrees" and menu[2][0] contains "Desserts".
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The subsequent elements in each sub-array are the food items that belong to that category.
  • For example, in the Entrees category, menu[1][1] is "Steak", menu[1][2] is "Stir-Fry" and menu[1][3] is "Porkchops".
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Here is a visual representation of the menu 2D array:
Table 13.1.1.
Appetizers menu[0][0] Deviled Eggs menu[1][1] Nachos menu[1][2] Salad menu[1][3]
Entrees menu[1][0] Steak menu[2][1] Stir-Fry menu[2][2] Porkchops menu[2][3]
Dessert menu[2][1] Key-Lime Pie menu[3][1] Raspberry Tarts menu[3][2] Sundae menu[3][3]
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Subsection 13.1.3 Instructions

  1. Implement the displayMenu method.
    • This method should iterate through the menu array and print all their categories along with their respective dishes.
    • Each dish should be printed on a new line and each category should be visually separated in the output.
  2. Implement the displayCategory method.
    • This method accepts the menu 2D array and an integer category, which represents the index of the category to be displayed (0 for Appetizers, 1 for Entrees, 2 for Desserts).
    • displayCategory will display the chosen category and its dishes in the same format similar to displayMenu, but only for the specified category.
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The expected output is:
-- Menu -- 
Category: Appetizers
Deviled Eggs
Nachos
Salad

Category: Entrees
Steak
Stir-Fry
Porkchops

Category: Desserts
Key-Lime Pie
Raspberry Tarts
Sundae

TEST: Printing entrees...
Category: Entrees
Steak
Stir-Fry
Porkchops
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