Static Variable Question?

Of course ... do a Google search on "java synchronize static variables" and you'll find all sorts of discussion on the topic

Yes

I gave you the answer to your question. If you have a different question be sure to ask it!

Don't come back with the "how" - I already suggested what resources are available to you to answer that question for yourself so you can learn it best. Trust the JVM to manage things properly if you are clear in telling it what you want.