java fork join

sleep randomly for 0-9 seconds in a child thread, and the time would be =9566.Normally I'm going to do it first, but after joining the join, the main main thread waits for the child thread to finish executing In the main thread, the Mythread.join () is added; Whoever joins the party will wait for someone. Join also has a join (Millis) method, you can add wait ti

usage and differences between sleep (), wait (), and notify () and Notifyall (), Suspend and resume (), yield (), join (), interrupt () in Java threadsfrom the operating system's point of view, the OS maintains a ready queue (the queued thread of readiness).And at some point the CPU only serves the thread that is in the queue header in the ready queue. However, the thread that is currently being serviced ma

calls the Wait method, but there is no corresponding notify method, because the thread's start method does the appropriate processing, so when the join's threads are completed, the main process is automatically awakened to continue. The sleep (), yield (), join () three methods act as threads for communication, and they are in the thread class. However, the Wait (), notify (), Notifyall () method that implements the thread communication is not locate

, because in the thread of the Run method is assigned to STR before the operation of 1 seconds sleep, At this point the System.out.println method in the main thread has been executed, so it is difficult to see that the value of str is "Hello word", in order to see the value of str is "Hello word", one of our ideas is to wait for the thread to run after the end, We can do the System.out.println again, when the Join method is shown, we delete the commen

() method causes the effect of the join () method to be invalid after a specific timeout. When a timeout occurs, the main method and the task thread are equal when the application runs. However, when sleep is involved, the join () method relies on the operating system to clock, so you should not assume that the join () method will wait for the time you specify.

Interruptedexception is thrown from within the thread itself, not by the interrupt () method. When you call interrupt () on a thread, the thread does not throw interruptedexception at all if it is executing normal code. However, once the thread has entered wait ()/sleep ()/join (), the interruptedexception is immediately thrown.the difference between the various methods Thread Method Name Whether to release the sync lock Whe

[Big data from introductory to discard series tutorial] in Idea's Java project, configure and join Scala, write and run Scala's Hello WorldOriginal link: http://www.cnblogs.com/blog5277/p/8615984.htmlOriginal Author: Blog Park------Click on the menu below to view Big data Getting started all tutorialsBig data from getting started to giving upUrl:Http://www.cnblogs.com/blog5277/category/1179528.htmlSplit ***

The join () method is used to let the current thread of execution wait for the join thread to finish. The principle of implementation is to constantly check whether the join thread is alive, and let the current thread wait forever if the join thread survives.Join () method partial implementation Detailswhile (IsAlive (

Original article: http://blog.csdn.net/szwangdf/article/details/4177104 1. Java 1-1. String Array => string: stringutils: Join (object [] array, string separator) Example: /** Join strings using separator >>> AB $ # $ CD $ # $ EF */import Org. apache. commons. lang. stringutils; public class stringutilstrial {public static void main (string [] ARGs) {/

multithreading to help us in peacetime development, such as thread pool how to achieve? How to apply locks and so on. (1) What does the method join do? Simple answer, sync, how to sync? How did it happen? The following will be answered individually. Since the touch of Java multithreading, the join has not been understood. This is what the JDK says:

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();ob3.t.join();} catch (InterruptedException e) {System.out.println("Main thread Interrupted");}System.out.println("Thread One is alive: "+ ob1.t.isAlive());System.out.println("Thread Two is alive: "+ ob2.t.isAlive());System.out.println("Thread Three is alive: "+ ob3.t.isAlive());System.out.println("Main thread exiting.");}} The program output is as follows:? 1234567891011121314151617181920212223242526272829 New thread: Thread[One,5,main]New thread: Thread[Two,5,main]Ne

threads.The basic format used is as Follows:Thread.Join ()4.wait () Method and Nofity () methodThe wait () method is very similar to the join () method, and for the join () method, thread 1 waits for thread 2 to complete something before it can continue, and thread 2 completion indicates that the thread has died naturally, whereas for the wait () method, only thread 2 calls Nofity () method to wake up thre

implementation of this method#pragma mark-#pragma mark Nscopying methodThis method needs to be implemented to support the memo-(ID) Copywithzone: (Nszone *) zone{Using the Self class here is a type that you want its subclasses to return as well as subclasses.Yiche *yichecopy = [[Self class]allocwithzone:zone]init];return yichecopy;}The specific scene class will no longer write, mainly to explain the prototype model of a simple example, and then write the time also feel that there are some short

The function of the join method is to convert the asynchronous thread into synchronous execution. That is to say, after the start method of the thread instance is called, this method will return immediately. If a value calculated by this thread needs to be used after the start method is called, you must use the join method. If the join method is not used, it cann

For the use of join in java multithreading, see the following two simple thread classes.1. SleepPackage com. demo;Public class Sleeper extends Thread {Private int duration;Public Sleeper (int duration, String name ){Super (name );This. duration = duration;Start ();}Public void run (){Try {Sleep (duration );} Catch (InterruptedException e ){System. out. println (getName () + "is interupted .");Return;}System

Off Topic:The interrupt () method does not interrupt a normal running thread!!!Class MyThread extends thread{ @Override public void Run () {for (int i = 0; i Output:Mark......i=999Join () methodSpecific usage http://www.cnblogs.com/luyu1993/p/7017927.htmlHere, look at its source code.Public final synchronized void join (long Millis) throws interruptedexception { long base = System.currenttimemillis (); Long now = 0; if (Milli

Function: Join () function: combines an array into a string using the selected separator. This is the method provided in JavaScript. net contains a similar string. the join method can concatenate the specified separator string between each element of the specified string array to generate a single concatenation string, because most of the problems encountered are for the string array, so it is barely enough

This example describes the join method for thread in Java. Share to everyone for your reference. The implementation methods are as follows: JoinPublic final void Join ()Throws Interruptedexception waits for the thread to terminate. Thrown:Interruptedexception-If any thread interrupts the current thread. When the exception is thrown, the interrupt state of the c

series focuses on how to deeply understand multithreading to help our normal development, such as how to implement the thread pool? How to Apply locks. (1) What is the use of join? Simple answer: How to synchronize synchronization? How to implement it? The answer is as follows.Since I started to use Java multithreading, I have never understood join. JDK says th