Thread.start() prints 0 on the console

Question

I cant figure out why the following line of code prints on the console

new Thread(this).start()

this output: http://i.stack.imgur.com/TWoiZ.png

This is a Runnable object.

Further debugging made me realize that it seems to be connected to the start0() method in the .start()

Answer 1

That line will cause the run() method of the Runnable to be executed; presumably that method prints this output.