Runtime.exec() ... executing a java jar from within an NT command file

Hello,
I spent the better part of yesterday seeking insight to this with little success. So I hope someone here can direct me in a productive direction.
I set-up my runtime.exec in a manner similar to the article on javaworld.com which is often referred to here, with two threads to empty the output and error streams of the NT command file I am executing.
The command file works perfectly from the command line.
I am currently attempting to build a gui which will automate regression testing for another application. This requires third party software to be running prior to the execution of the test suite. This third party software is started using an NT command file. The command file sets up an environment (classpath, server flags, etc.) and then executes a jar file. When this command file is run from my Gui, the output is identical to the command being run from the command line. Then when the jar file is to be executed, the command file output shows a "file not found" error, but only when executed from my Gui.
My call to runtime exec looks like this.
cmdString = new String("commandtoexecute");
fileLoc = new String("Fully qualified path to command file");
String [] envp = new String[0];
testProcess = Runtime.getRuntime().exec(cmdString, envp, fileLoc);
// some code to process the output streams of testProcess
Other Info:
Gui currently executed within Eclipse IDE
BEA WebLogic is the third party software

First, my app has the requirement of allowing the user to start WebLogic if it is not already running.Unfortunately, I can't change the requirement.
But I would say that in a production environment WebLogic should always be running.
I guess it's an assumption that I'd make a priori. You're jumping through too many hoops to accomplish something that is better solved with a phone call to the server admin: "Please start the WebLogic service."
.... Side question ... any recommendations on detecting if it is already running? grin
Yes, call the server admin and ask why you can't have 99.999% availability of a critical resource.
Second, development is on a hardened system (i.e. very
long time getting approval for additional software on
the system).Cactus and JUnit are both open source. No fees involved. If you can install a JAR, you can use these tools.
Better yet, you can drive them automatically as part of your Ant build process. A GUI implies a person in front of it to start and monitor the tests. JUnit and Ant are all about automating these things so they're run every time you rebuild and redeploy the code. You get XML reports on test results that are displayable in a browser. You can even e-mail the test summary to all developers so they can see if a test broke the build. If a test breaks, you don't deploy. That's the way to go, IMO.
When you have a working Ant build.xml, the next step is to automate the build completely using a tool like ThoughtWorks' CruiseControl.
Thank you for you suggestions though. I will read up on Cactus to see if it could help me here.You're welcome. Good luck. Sorry that I'm not more help.

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