Simple multi-threaded ticket simulation program (lock to solve multi-threaded existence of large security risks)

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jdk1.5 Lock instead of synchronized,condition package

Object in Sleep,wait,notify, Notifyall

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/*
Demand:
Write a simple multithreaded simulation to buy tickets for the program
Four ticket windows, a total of 100 tickets

*/
Import java.util.concurrent.locks.*;
Class Tick implements runnable{
private static int tick=100;
Private String window;
To create a lock object
Private Lock lock=new Reentrantlock ();
To create a condition object by locking an object
Private Condition con=lock.newcondition ();
public void Windowname (String window) {
This.window=window;
}
public void Show (Object obj) {
System.out.println (obj);
}
public void Run () {
Locking
Lock.lock ();
try{
while (tick>0) {
Equivalent to a previous lock. Sleep (1);
Con.awaitnanos (1);
if (tick>0)
Show (window+ ":" +tick--+ "ticket");
}
}catch (Exception e) {}
finally{
Show (window+ ": The ticket has been sold out");
Unlock
Lock.unlock ();
}
}
}

public class ticketdemo{
public static void Main (String args[]) {

Tick tick0=new tick ();
Tick tick1=new tick ();
Tick tick2=new tick ();
Tick tick3=new tick ();
Thread t0=new thread (TICK0);
Thread t1=new thread (TICK1);
Thread t2=new thread (TICK2);
Thread t3=new thread (TICK3);
Tick0.windowname ("Window 1");
Tick1.windowname ("Window 2");
Tick2.windowname ("Window 3");
Tick3.windowname ("Window 4");
T0.start ();
T1.start ();
T2.start ();
T3.start ();
}

}

Simple multi-threaded ticket simulation program (lock to solve multi-threaded existence of large security risks)