rsync multiple threads

Package Chapter III. Signal volume;Import Java.util.concurrent.ExecutorService;Import java.util.concurrent.Executors;Import Java.util.concurrent.Semaphore;/*** Created by Zzq on 2018/1/23.*/public class Simpotest implements Runnable {Final Semaphore semaphore=new Semaphore (5);public void Run () {try {Semaphore.acquire ();System.out.println (Thread.CurrentThread (). GetName () + "-------Get execution rights");Thread.Sleep (2000);Semaphore.release ();} catch (Interruptedexception e) {E.printstack

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Class ManyThreads2 {private int j = 0;Public synchronized Void Inc () {j + +;System.out.println (Thread.CurrentThread (). GetName () + "Inc" + j); }public synchronized void Dec () {j--;System.out.println (Thread.CurrentThread (). GetName () + "Dec" + j);}}public class MyTest extends Thread {Private MANYTHREADS2 many = new ManyThreads2 ();public void Run (){many.inc ();Many.dec ();Many.inc ();Many.dec ();}public static void Main (string[] args) {TODO auto-generated Method StubMyTest MyTest = new

public class ThreadDemo4 {Static Sharedata data=new sharedata ();public static void Main (string[] args) {New Thread (new Myrunnable1 (data)). Start ();New Thread (new Myrunnable2 (data)). Start ();}}Class Myrunnable1 implements runnable{int i=50;Private sharedata data;Public Myrunnable1 (Sharedata data) {This.data=data;}@Overridepublic void Run () {while (i>0) {i--;Data.increment ();}}}Class Myrunnable2 implements runnable{int i=50;Private sharedata data;Public Myrunnable2 (Sharedata data) {Thi

* Refer to this article please indicate from blog.csdn.net/wtz1985 In the previous article, I have explained the implementation of simple locks in multiple threads, but at the end of the day, I mentioned a problem, that is, if you are inserting in a linked list, the operation of the query, if only a simple lock, can not be achieved. So the "recursive lock" comes to the world. Perhaps some people see recursi