Multi-threaded ticket lock lock (i)

Package testlock;


Import Java.util.concurrent.locks.Lock;
Import Java.util.concurrent.locks.ReentrantLock;


Class Sellticket implements Runnable {


Define Tickets
private int tickets = 100;


Defining Lock objects
Private lock lock = new Reentrantlock ();


public void Run () {
while (true) {
try {
Locking
Lock.lock ();
if (Tickets > 0) {
try {
Thread.Sleep (100);
} catch (Interruptedexception e) {
E.printstacktrace ();
}
System.out.println (Thread.CurrentThread (). GetName () + "being sold" + (tickets--) + "Ticket");
}
} finally {
Release lock
SYSTEM.OUT.PRINTLN ("release lock");
Lock.unlock ();
}
}
}


}


/*
* Although we can understand the problem of lock object of synchronous code block and synchronous method, but we do not directly see where to add the lock, where to release the lock, in order to express more clearly how to lock and release the lock, JDK5 later provided a new lock object locks.
*
* Lock:void Lock (): Gets the lock. void Unlock (): Release lock. Reentrantlock is the implementation class for lock.
*/
public class Sellticketdemo {
public static void Main (string[] args) {
Create a Resource object
Sellticket st = new Sellticket ();


Create a three window
thread T1 = new Thread (ST, "Window 1");
Thread t2 = new Thread (ST, "Window 2");
thread t3 = new Thread (St, "Window 3");


Start thread
T1.start ();
T2.start ();
T3.start ();
}
}