This week's giveaway is in the EJB and other Java EE Technologies forum. We're giving away four copies of EJB 3 in Action and have Debu Panda, Reza Rahman, Ryan Cuprak, and Michael Remijan on-line! See this thread for details.
Very easy. You can time how long does it take you to read this tutorial
Is it possible for us to record our actions and convert them as test cases??
Now you're confusing unit tests with functional tests. There are separate tools for recording user actions. JUnit is a framework for writing unit tests, although some recording tools might produce JUnit-compatible classes as output.