Ok, I'll give you some clues and you can put these together to get your answer:
1. s1 is a local variable in the run() method of the ProcessingThread class.
2. run() is an instance method of the ProcessingThread class.
3. In your main() method, you create two instances of ProcessingThread
The above should help you deduce how many instances of SampleClass you'll end up creating in your code.
My question to you is this: Why do you even care about the memory allocated for that line of code? IMO,
you should first care more about WHAT you're trying to do, not how the JVM is doing it. Don't stick your nose into the JVM's business because managing objects and memory usage is NOT
your responsibility; at least not until you can absolutely
prove that the JVM needs some help. Your primary responsibility as a programmer is to
write clean, well-factored, maintainable code.