Example of Java multi-threaded window ticketing problem

This article introduces two shackles for multi-threading implementation of multiple window ticketing problems, namely synchronized, lock() and unlock()

The specific code is as follows:

The first type:

 package Runnable; import java.util.concurrent.locks.Lock; import java.util.concurrent.locks.ReentrantLock; /* * Synchronization* There are two ways to lock* here: * 1.synchronized * 2.lock() and unlock() */ public class MyRunnable implements Runnable { private int tickets = 100; // Define lock private Lock lock = new ReentrantLock(); public void run() { while (true) { // Lock lock.lock(); if (tickets > 0) { try { Thread.sleep(100); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println(Thread.currentThread().getName() + "Sold" + (tickets--) + "Tickets"); } lock.unlock(); } } }

result:

The second type:

 package Runnable; /* * Synchronized* There are two ways to lock* here: * 1.synchronized * 2.lock() and unlock() */ public class MyRunnable implements Runnable { private int tickets = 100; public void run() { while (true) { synchronized (this) { if (tickets > 0) { try { Thread.sleep(100); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println(Thread.currentThread().getName() + "Sold" + (tickets--) + "Tickets"); } } } } }

result:

 package Runnable; public class RunnableDemo { public static void main(String[] args) { MyRunnable myRunnable = new MyRunnable(); Thread t1 = new Thread(myRunnable, "Window One"); Thread t2 = new Thread(myRunnable, "Window Two"); Thread t3 = new Thread(myRunnable, "Window Three"); t1.start(); t2.start(); t3.start(); } }

I don’t know if it was a coincidence or something, but when I was running these two multi-threaded small instances, the computer suddenly got stuck and I quickly turned off eclipse.

There are statements about ending the process and have not been added, please refer to it yourself.

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