$0 (Program Name) in Java? Discover main class?

Question

Is there a way to find the name of the program that is running in Java? The class of the main method would be good enough.

Answer 1

Try this:

    StackTraceElement[] stack = Thread.currentThread ().getStackTrace ();     StackTraceElement main = stack[stack.length - 1];     String mainClass = main.getClassName (); 

Of course, this only works if you're running from the main thread. Unfortunately I don't think there's a system property you can query to find this out.

Edit: Pulling in @John Meagher's comment, which is a great idea:

To expand on @jodonnell you can also get all stack traces in the system using Thread.getAllStackTraces(). From this you can search all the stack traces for the "main" Thread to determine what the main class is. This will work even if your class is not running in the main thread.