Question 20: Consider the code given below. Which of the following op…

1class ConferenceRoom {
2    private boolean isRoomAvailable = true;
3    public synchronized void bookRoom(String employeeName) {
4        if (isRoomAvailable) {
5            System.out.println(employeeName + " successfully booked the room.");
6            isRoomAvailable = false;
7        } else {
8            System.out.println(employeeName + " could not book the room.");
9        }
10    }
11}
12class Employee implements Runnable {
13    private ConferenceRoom conferenceRoom;
14    private String employeeName;
15
16    public Employee(ConferenceRoom cr, String en) {
17        conferenceRoom = cr;
18        employeeName = en;
19    }
20
21    public void run() {
22        conferenceRoom.bookRoom(employeeName);
23    }
24}
25public class Test{
26    public static void main(String[] args) {
27        ConferenceRoom room = new ConferenceRoom();
28        Thread emp1 = new Thread(new Employee(room, "Hema"));
29        Thread emp2 = new Thread(new Employee(room, "Geeta"));
30        Thread emp3 = new Thread(new Employee(room, "Sita"));
31        emp1.start();
32        emp2.start();
33        emp3.start();
34    }
35}