Thank you very much !
I will check these out.
Good luck. I see by some of your earlier posts, you know JavaScript. My advice would be to push that out of your mind when learning Java.I'm prejudiced, but the JavaScript code I see is rarely written in an object-oriented fashion or rarely written well - it's usually written in an "ends justifies the means" fashion.
It's worth the effort to code Java in an object-oriented fashion.