Question

I have a .bat file in a Windows machine that starts our program by calling a main class of a Java executable(.Jar)

Now I need to run this every 30 mins.

I gone through several ways of doing it, but unable to decide which is better.

Scheduling through Windows scheduler or Using Java Timer. Which one to choose?
I want only one instance of the process running. If the previous process doesnt complete within 30min, i could wait.

Please let me know what to go for, based on my use case.

Thanks in advance.

Answer 1

You’re better off using the Windows Scheduler. If there’s a real risk of the process taking too long, you can create a file, or open a socket while the process is running and when another one tries to start up, it can detect that and simply quit. This would make it “miss” the 30m window (i.e. if the first job started at 12 and finished at 12:35, the next job would not start until 1).

But this way you don’t have to worry at all about setting up long running processes, starting and stopping the java service, etc. The Windows scheduler just makes everything easier for something like this.