Java

OOP GUIDE / WORK

ROOM CLASS 2

Topics

• Object arrays

TASK – PART 1 – SETUP

• Copy your Room class and RoomTester class into a new package.
  
  
• Create a new class called RoomArraysTester.

TASK – PART 2 – ROOMARRAYTESTER CLASS

Do the following steps inside your new class:

• Create a main function to place all of your code in.
  
  
• Inside main, create a Room array named rooms of size 43.
  
  
• Add the following statement:
  
  System.out.println(rooms[0]);
  
  It should output null. All elements in the array are currently null.
  
  
• Create the following Room objects in the array by copying and pasting the following statements:

rooms[0] = new Room(101, "classroom", 82, true);

rooms[1] = new Room(103, "office", 6, false);

rooms[2] = new Room(107, "classroom", 140, true);

rooms[3] = new Room(109, "classroom", 60, true);

rooms[4] = new Room(110, "washroom", 18, false);

rooms[5] = new Room(111, "washroom", 21, false);

rooms[6] = new Room(120, "classroom", 74, true);

rooms[7] = new Room(124, "office", 24, true);

rooms[8] = new Room(125, "office", 18, true);

rooms[9] = new Room(127, "classroom", 88, true);

rooms[10] = new Room(129, "classroom", 92, true);

rooms[11] = new Room(131, "classroom", 112, true);

rooms[12] = new Room(132, "classroom", 74, false);

rooms[13] = new Room(134, "washroom", 20, false);

rooms[14] = new Room(140, "washroom", 24, false);

rooms[15] = new Room(161, "changeroom", 88, true);

rooms[16] = new Room(162, "changeroom", 88, true);

rooms[17] = new Room(164, "gym", 680, true);

rooms[18] = new Room(170, "classroom", 122, true);

rooms[19] = new Room(171, "classroom", 98, true);

rooms[20] = new Room(175, "classroom", 84, false);

rooms[21] = new Room(177, "classroom", 82, true);

rooms[22] = new Room(182, "office", 42, false);

rooms[23] = new Room(183, "office", 34, false);

rooms[24] = new Room(185, "classroom", 92, false);

rooms[25] = new Room(186, "classroom", 78, true);

rooms[26] = new Room(192, "storage", 78, true);

rooms[27] = new Room(194, "classroom", 81, true);

rooms[28] = new Room(204, "classroom", 102, true);

rooms[29] = new Room(205, "classroom", 64, true);

rooms[30] = new Room(212, "classroom", 114, false);

rooms[31] = new Room(213, "classroom", 94, true);

rooms[32] = new Room(216, "washroom", 22, false);

rooms[33] = new Room(217, "washroom", 25, false);

rooms[34] = new Room(219, "classroom", 84, false);

rooms[35] = new Room(224, "classroom", 106, true);

rooms[36] = new Room(225, "classroom", 103, true);

rooms[37] = new Room(229, "storage", 102, false);

rooms[38] = new Room(234, "storage", 104, false);

rooms[39] = new Room(245, "office", 45, false);

rooms[40] = new Room(248, "office", 16, false);

rooms[41] = new Room(256, "classroom", 87, true);

rooms[42] = new Room(258, "classroom", 79, true);

• Write a function named countClassrooms() that gets the Room[] as parameter and counts and returns how many rooms are classrooms. Test you function.
  
  
• Write a function named totalArea() that gets the Room[] as parameter and returns the total area of all rooms in the school. Test you function.
  
  
• Write a function named outputUnventilatedRooms() that gets the Room[] as parameter and outputs the room numbers of the rooms that are unventilated. Test you function.
  
  
• On average, a classroom needs 4 square meters for the entrance way, 6 square meters for the teacher’s area and then 2.5 square meters per student. Write the function(s) required to determine how many students can fit in this school. Test you function(s).