How do I start a batch file and check it's status?

First of all I want to say I am a beginner in Java.
I am working on an server side application that starts batch files (for database filling). After it starts the batch (.bat) file it has to check the status and write it in the database.
The problem I run into the combination of starting the batch and checking the status.
So far I have found out that I can run the batch file with starting up an process with the Runtime.getRuntime().exec command. What I haven't found out if it is posible to check the status of this proces in any way.
I also found out that with using thread commands like isAlive I can check the status of a thread, but not of an process. And I understand that a thread can't start an batch file.
So could anyone please help me on my way. Am I doing something wrong? Is any of the above info incorrect? Or am I on the right way? And if I am on the right way what is the next step? Thanx in advance.

The problem I run into the combination of starting
the batch and checking the status.The exit status is only set onve the process completes.
process.exitStatus()
I also found out that with using thread commands like
isAlive I can check the status of a thread, but not
of an process. And I understand that a thread can't
start an batch file.Everything run in java is run from a thread. Only threads can do anything. The default thread is called "main"

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