A Process has two input streams, one covering the normal output stream of the proces being run, and one for the error stream.
You need to be reading from these and output the result so you can see what the process is doing. We shall have to bring out Michael Daconta: see the three links in this old post. Don't go anywhere near processes or process builder until you have understood Daconta's article. Rob Spoor. Still a great article, but it could use an update. For instance, if you use a ProcessBuilder and redirect the error stream to the output stream, you don't need any additional threads - you can simply read everything from the resulting Process' getInputStream before you call waitFor which is then the same as exitValue.
Hi, After tried all. I used to start the Tomcat service tomcat. After that wscript. Still wonder why this was not working with tomcat gui service. Is there any log on to use full administrative account to access system files? Any idea? You showed up just in time for the waffles!
And this tiny ad:. Boost this thread! Run a batch file. Clarification on Spring Boot project styles. Recommended Reading List for SpringBoot? Spring Boot: Has its day passed? Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Why does Runtime. Ask Question. Asked 6 years, 5 months ago. Active 5 years, 11 months ago.
Viewed 29k times. Scanner System. Add a comment. Active Oldest Votes. Why do some commands fail? When do commands fail? The shell does a lot of common, useful things we don't normally think about: The shell splits correctly on quotes and spaces This makes sure the filename in "My File.
The shell manages pipes and redirections. It just passes them as arguments. What can you do instead? There are two ways to execute arbitrarily complex commands: Simple and sloppy: delegate to a shell. Retired horse trader. Note: double-underline links may be advertisements automatically added by this site and are probably not endorsed by me.
John Reilly wrote: I think I solved the problem I took out the join on the input and error gobbler threads. What may of been happening is that when exec messed up the join's were never going to finish and so the thread that called exec was just left there. Should I put a time out on the Process waitFor method, as it something happened when exec was running could the calling method be left waiting indefinitely for wairFor to return?
Forum: Java in General. Timmy Ryan. I like Optional 'thank-you' note:. I have a program which needs to call exec every 15 seconds. It works fine for a while but then starts failing. It could be a few minutes or could be a few hours before this happens.
IOException Cannot run program "cmd. The system I am running exec on is Windows Any suggestions? James Sabre. John Reilly wrote: Any suggestions? Post your code and if you can post the code of the executable or batch file you are executing. I don't see any code showing how you handle the process stdout, stderr or return code.
Is there any? The only time you will need to invoke using cmd.
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