This program is written in Java. I\'m having a lot of issues getting it to work.

Question

This program is written in Java. I'm having a lot of issues getting it to work. Any help would be greatly appreciated. Thanks!

We want you to create a class RoomPeople that can be used to record the number of people in the rooms of a building. The class has the attributes number In Room-the number of people in a room totalNumber - the total number of people in all rooms as a static variable The class has the following methods: addOneToRoom - adds a person to the room and increases the value of totalNumber remove0neFromRoom - removes a person from the room, ensuring that DnumberInRoom does not go below zero, and decreases the value of tota!Number as needed getNumber - returns the number of people in the room D getTotal-a static method that returns the total number of people Please write a program to test the class RoomPeople Expected results //addOneToRoom () Add two to room a andd three to roomb Room a holds 2 Room b holds 3 Total in all rooms is 5 Remove two from both rooms Room a holds 0 Room b holds 1 Total in all rooms is 1 Remove two from room a (should not change the values/removeOneFromRoom () Room a holds 0 Room b holds 1 Total in all rooms is 1 //removeOneFromRoom () //getTotal)

Explanation / Answer

Please find the required solution:

class RoomPeople {
   private int numberInRoom;
   private static int totalNumber;

   public int getNumberInRoom() {
       return numberInRoom;
   }

   public static int getTotalNumber() {
       return totalNumber;
   }

   void addOneToRoom() {
       numberInRoom++;
       totalNumber++;
   }

   // removes only if number in room >0
   void removeOneFromRoom() {
       if (numberInRoom > 0) {
           numberInRoom--;
           if (totalNumber > 0)
               totalNumber--;
       }
   }

   int getNumber() {
       return numberInRoom;
   }

   int getTotal() {
       return totalNumber;
   }

}

public class TestRoomPeople {
   public static void main(String[] args) {
       // create room a
       RoomPeople roomA = new RoomPeople();
       // create room b
       RoomPeople roomB = new RoomPeople();

       // Add two to room A and three to room B
       roomA.addOneToRoom();
       roomA.addOneToRoom();

       roomB.addOneToRoom();
       roomB.addOneToRoom();
       roomB.addOneToRoom();
       System.out.println("room A holds:" + roomA.getNumber());
       System.out.println("room B holds:" + roomB.getNumber());
       System.out.println("Total in all rooms:" + RoomPeople.getTotalNumber());

       // remove two from both rooms
       roomA.removeOneFromRoom();
       roomA.removeOneFromRoom();

       roomB.removeOneFromRoom();
       roomB.removeOneFromRoom();
       System.out.println("room A holds:" + roomA.getNumber());
       System.out.println("room B holds:" + roomB.getNumber());
       System.out.println("Total in all rooms:" + RoomPeople.getTotalNumber());

       // remove two from a
       roomA.removeOneFromRoom();
       roomA.removeOneFromRoom();
       System.out.println("room A holds:" + roomA.getNumber());
       System.out.println("room B holds:" + roomB.getNumber());
       System.out.println("Total in all rooms:" + RoomPeople.getTotalNumber());

   }
}

Sample output for the above solution: room A holds:2
room B holds:3
Total in all rooms:5
room A holds:0
room B holds:1
Total in all rooms:1
room A holds:0
room B holds:1
Total in all rooms:1

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