Problem2

LAB5_P2.java

package edu.northeastern.csye6200;

public class LAB5P2 {
	public static void main(String[] args){
		RoomPeople roomA = new RoomPeople();
		RoomPeople roomB = new RoomPeople();
		
		System.out.println("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 is " + RoomPeople.totalNumber);
		
		System.out.println("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 is " + RoomPeople.totalNumber);

		System.out.println("Remove two from room 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 is " + RoomPeople.totalNumber);
		
	}
}

class RoomPeople {
    
	int numberInRoom;
	static int totalNumber;
    
    public static int getTotal(){
    	return totalNumber;
    }
    
    public RoomPeople() {
    	numberInRoom = 0;
    }
  

	public void addOneToRoom(){
    	numberInRoom++;
    	totalNumber++;
    }
    
    public void removeOneFromRoom(){
    	if(numberInRoom > 0) {
    		numberInRoom--;
        	totalNumber--;
    	}
    }
    
    public int getNumber(){
        return numberInRoom;
    }
}