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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 13.2 Growth Level

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Multidimensional Arrays
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Subsection 13.2.1 Overview

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This Java program simulates a reservation system for movie theater seats using a multidimensional array. It is designed to manage the seats in a theater and it allows the user to check the availability of seats, reserve specific seats, and display the seating layout.
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Subsection 13.2.2 2D Array

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The 2D array seats represents the rows and columns of seats in a theater. Here is the initialization of the array:
String[][] seats = {
    {"OCCUPIED", "AVAILABLE", "OCCUPIED", "AVAILABLE"}, 
    {"AVAILABLE", "AVAILABLE", "OCCUPIED", "OCCUPIED"}, 
    {"OCCUPIED", "OCCUPIED", "AVAILABLE", "AVAILABLE"}
};
  • The array seats has 3 rows and 4 columns.
  • Rows are indexed from 0 to 2 and columns within each row are indexed from 0 to 3.
  • Each element in the array is a String that can either be "AVAILABLE" or "OCCUPIED".
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Subsection 13.2.3 Instructions

  1. Implement displaySeats(String[][] seats)
    • The displaySeats() method prints out the entire seating arrangement and shows the current status of each seat.
    • Example output:
      Seating Arrangement:
OCCUPIED        AVAILABLE       OCCUPIED        AVAILABLE
AVAILABLE       AVAILABLE       OCCUPIED        OCCUPIED
OCCUPIED        OCCUPIED        AVAILABLE       AVAILABLE
  2. Implement checkSeats(String[][] seats)
    • The checkSeats() method checks and displays the number of available seats in each row and the total number of available seats in the entire theater.
    • It iterates through each row and each seat within the row to count the number of "AVAILABLE" seats.
    • Example output:
      Row 1 has 2 available seats.
Row 2 has 2 available seats.
Row 3 has 2 available seats.
Total available seats: 6
  3. Implement reserveSeat(String[][] seats, int row, int seat)
    • The reserveSeat() method allows the user to reserve a seat by specifying the row and seat index.
    • If the seat is available, it changes the seat status to "OCCUPIED" and prints a success message.
    • If the seat is already occupied, it prints an error message.
    • Example output:
      [SUCCESS] Seat 0, 1 has now been reserved.
[ERROR] Seat 0, 2 has already been occupied.
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The expected output is:
Seating Arrangement:
OCCUPIED        AVAILABLE       OCCUPIED        AVAILABLE
AVAILABLE       AVAILABLE       OCCUPIED        OCCUPIED
OCCUPIED        OCCUPIED        AVAILABLE       AVAILABLE
Row 1 has 2 available seats.
Row 2 has 2 available seats.
Row 3 has 2 available seats.
Total available seats: 6
[SUCCESS] Seat 0, 1 has now been reserved.
[ERROR] Seat 0, 2 has already been occupied.
[SUCCESS] Seat 1, 0 has now been reserved.
[SUCCESS] Seat 2, 3 has now been reserved.
Seating Arrangement:
OCCUPIED        OCCUPIED        OCCUPIED        AVAILABLE
OCCUPIED        AVAILABLE       OCCUPIED        OCCUPIED
OCCUPIED        OCCUPIED        AVAILABLE       OCCUPIED
Row 1 has 1 available seats.
Row 2 has 1 available seats.
Row 3 has 1 available seats.
Total available seats: 3
[SUCCESS] Seat 1, 1 has now been reserved.
[SUCCESS] Seat 2, 2 has now been reserved.
Seating Arrangement:
OCCUPIED        OCCUPIED        OCCUPIED        AVAILABLE
OCCUPIED        OCCUPIED        OCCUPIED        OCCUPIED
OCCUPIED        OCCUPIED        OCCUPIED        OCCUPIED
Row 1 has 1 available seats.
Row 2 has 0 available seats.
Row 3 has 0 available seats.
Total available seats: 1
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