Simulated ticket window, with 4 threads to simulate 4 windows in the ticket, a total of 8 tickets, with thread synchronization to achieve

Simulated ticket window, with 4 threads to simulate 4 windows in the ticket, a total of 8 tickets, with thread synchronization to achieve
public class Ticket {

public static void Main (string[] args) {
for (int i=0;i<4;i++) {
New Sellwindow (). Start ();
}
}
}

Class Sellwindow extends Thread {
private static int ticketall = 100;
private static Object obj = new Object ();

public void Run () {
while (true) {
Synchronized (obj) {
if (Ticketall > 0) {
/* Try {
Thread.Sleep (10);
}
catch (Exception ex) {
}*/

ticketall--;
System.out.println (GetName () + "ticketing" + Ticketall);
System.out.println (GetName () + "sell" + "Tickets_" + (100-ticketall));
} else {
Break
}
}
}
}

}

Simulated ticket window, with 4 threads to simulate 4 windows in the ticket, a total of 8 tickets, with thread synchronization to achieve