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Java Runtime Exec Multithread


Thanks. –Steven Solomon Dec 1 '12 at 17:04 add a comment| up vote 1 down vote First, you should call join() on any thread that you start. In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms How was the USA able to win naval battles in the Pacific? I will be iterating the list and initiate a process like this: Runtime.getRuntime.exec("cmd /C start abc.bat"+listitem() ) I need to maintain a count of 4 processes. http://cdhca.org/java-runtime/how-to-use-runtime-exec-in-java.php

Browse other questions tagged java multithreading parallel-processing or ask your own question. Why can I not filter it inside my REST API end point Quantum Field Theory in position space instead of momentum space? HTTP and FTP detection for corruption Does a byte contains 8 bit, or 9? Can I do without?

Java Runtime Exec Example

Frozen Jack: Actor or Prop? Christophe Verré Sheriff Posts: 14691 16 I like... Not the answer you're looking for? SwingUtilities.invokeLater(new X("X")); } // End main(String[]) public X (String title) { ...

Did Donald Trump say that "global warming was a hoax invented by the Chinese"? I've called these two modules from a third java program , which calls the two java modules( .jar files) with the two Runtime Processess(i.e. Stack Overflow Podcast #97 - Where did you get that hat?! In the code "{ exec >/dev/null; } >/dev/null" what is happening under the hood?

Thanks in advance. Java Process Builder asked 5 years ago viewed 3382 times active 5 years ago Blog Developers, webmasters, and ninjas: what's in a job title? For sure, it is. What do I do if my supervisor insists that the classical CLT is false and wants me to write that in my paper?

Bayes regression - how is it done in comparison to standard regression? more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed How did you do ? My question is, Is it possible to synchronize the output on System.out using wait()/notify() instead of polling the alive status of each StreamGobbler in a while loop?

Java Process Builder

If you are unsure [1] 11 [2] public void execute() { [0] maildrop [3] # consult the online docs. Frozen Jack: Actor or Prop? Java Runtime Exec Example The run() method is the part that gets run in a separate thread. Executorservice Crack the lock code An idiom or phrase for when you're about to be ill Are the mountains surrounding Mordor natural?

To see if this was a limitation of the script host, I created a batch file that STARTs multiple instances of the script concurrently. check over here java multithreading parallel-processing share|improve this question asked Oct 23 '10 at 18:02 helpmepls 73114 I know this is late, but did you take a look at ProcessBuilder as a Linked 18 Launch JVM process from a Java application use Runtime.exec? 0 Java: How to open the execution of new Thread in separate command window from Main Thread? In it, you'll get: The week's top questions and answers Important community announcements Questions that need answers see an example newsletter By subscribing, you agree to the privacy policy and terms

Your worker thread will block until the print process has finished or was killed by the watchdog. If the subprocess has not yet terminated, the calling thread will be blocked until the subprocess exits. The problem seems to be that all calls to start a process are synchronized. http://cdhca.org/java-runtime/exec-runtime-java-example.php You should instead use the ProcessBuilder and its inheritIo() method.

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Here is what I am doing.

Linked 1316 “implements Runnable” vs. “extends Thread” 11 Why should avoid using Runtime.exec() in java? 1 How to execute multiple windows commands using Runtime class in java Related 1how to use The primary problem is you've got all that code running inside the "testing" constructor, not inside the run() method. An Interesting experiment: wait 1 second before trying to do the echo in each thread. That means that it all gets run as part of the one main thread that starts everything - not as part of a separate thread that actually runs concurrently with other

share|improve this answer answered Jan 21 at 11:21 Borislav Stoilov 1228 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign The 4 threads continuously run the process and as soon as it exits the thread runs it again in while loop until you call shutdownNow() –Narendra Pathai Aug 2 '13 at I don't know if it applies to your situation but if it does, it can be the key to the solution. "In MOM 2000, only a single instance of a particular weblink Bought agency bond (FANNIE MAE 0% 04/08/2027), now what?

Supposed code : Process p1 = Runtime.getRuntime().exec(module1.jar); Process p2 = Runtime.getRuntime().exec(module2.jar); The problem is that, the second process executes only when the first process is completed ie.when the first module completes. more hot questions question feed lang-java about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation I truly hate this implementation, as I lose my cross-platform flexibility, but I may eventually develop similar *nix scripts to at least mitigate the problem. How to make sure that you get off at the correct bus stop in Thailand?

Finding a solution to a simple geometric set of equalities Will putting a clock display on a website boost SEO? I'd try a trivial script (or another program) producing a trivial output. –maaartinus Jan 20 '11 at 23:38 1 It sounds oddly like some of your fields may be static. or in dos shell start program1 program2 share|improve this answer edited Oct 24 '10 at 10:15 answered Oct 23 '10 at 18:09 Peter Lawrey 360k41410733 Actually not. I seems to be some problem with java exec implementation.

Sorry about the reply getting so long. Does a byte contains 8 bit, or 9? Here is the code: import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; public class RuntimeExecExample { private enum StreamType { OUTPUT, ERROR } public class MyStreamGobbler extends Thread { private InputStream