Java End Term: 11 December 2022, Set ETD1 (September 2022 term)

1class Enquiry{
2  int available = 1;
3  public synchronized void request(int n, String name){
4      if(available >= n){
5        available = available - n;
6        System.out.println(name + " booked " + n + " ticket");
7      }
8      else{
9        System.out.println(name + " cannot book " + n + " ticket");
10      }
11  }
12}
13class TicketBooking implements Runnable{
14  Enquiry e;
15  String name;
16  int n_tickets;
17  public TicketBooking(Enquiry e1, String n, int t){
18    // constructor
19  }
20  public void run(){
21    e.request(n_tickets, name);
22  }
23}
24public class Test{
25  public static void main(String[] args){
26    Enquiry obj = new Enquiry();
27    TicketBooking tb1 = new TicketBooking(obj, "Sita", 1);
28    TicketBooking tb2 = new TicketBooking(obj, "Raju", 1);
29    Thread t1 = new Thread(tb1);
30    Thread t2 = new Thread(tb2);
31    t2.start();
32    t1.start();
33  }
34}

1interface Displayable{
2    void display();
3}
4abstract class Delivery implements Displayable{
5    public abstract void deliver();
6}
7class Fpkart extends Delivery{
8    public void display() {
9        System.out.println("Fpkart display");
10    }
11    public void deliver() {
12        System.out.println("Fpkart delivery");
13    }
14}
15class Amzn extends Delivery{
16    public void deliver() {
17        System.out.println("Amzn delivery");
18    }
19    public void display() {
20        System.out.println("Amzn display");
21    }
22}
23public class User {
24    // CODE BLOCK
25    public static void main(String[] args) {
26        showDetails(new Fpkart());
27        showDetails(new Amzn());
28    }
29}