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/* N60mBA - synchronized for two object w/o using static */
/*
1. for class level
2. previous use for object
*/
class BookTheaterSeat{
int total_seats = 10;
synchronized void bookSeat(int seats){
if(total_seats>=seats){
System.out.println(seats+" seats booked successfully");
total_seats=total_seats-seats;
System.out.println("seats left = " + total_seats);
}
else{
System.out.println("sorry seats cannot be booked..!!");
System.out.println("seats left = "+total_seats);
}
}
}
class Mythread1 extends Thread{
BookTheaterSeat b ;
int seats ;
Mythread1 (BookTheaterSeat b, int seats){
this.b = b;
this.seats=seats;
}
public void run(){
b.bookSeat(seats);
}
}
class Mythread2 extends Thread{
BookTheaterSeat b ;
int seats ;
Mythread2 (BookTheaterSeat b, int seats){
this.b = b;
this.seats=seats;
}
public void run(){
b.bookSeat(seats);
}
}
public class N60mBA extends Thread{
public static void main(String[] args) {
BookTheaterSeat b1 = new BookTheaterSeat();
Mythread1 t1 = new Mythread1(b1,7);
t1.start();
Mythread1 t2 = new Mythread1(b1,6);
t2.start();
BookTheaterSeat b2 = new BookTheaterSeat();
Mythread2 t3 = new Mythread2(b2,5);
t3.start();
Mythread2 t4 = new Mythread2(b2,9);
t4.start();
}
}
// data inconsistant raheyga sync. keyword ke bavjuud
/*
ramannegi@Ramans-MacBook-Pro x % javac N60mBA.java
ramannegi@Ramans-MacBook-Pro x % java N60mBA
7 seats booked successfully
5 seats booked successfully
seats left = 3
seats left = 5
sorry seats cannot be booked..!!
sorry seats cannot be booked..!!
seats left = 3
seats left = 5
*/
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