Like in Scratch, "comment" blocks can be placed on to your Scratch project to document your Scratch blocks. You will have a chance to do that too in Java, except that you will have to write your own comments at appropriate locations in your Java code. Watch this video to learn more.From Scratch to JAVA: Lesson 1
Moriah Chesler
Scratch users, if you are ready to write some real code after having programmed in high level Scratch blocks, here's a wonderful programming environment for you. Let's tackle learning Java using Greenfoot, one step at a time, using your knowledge from Scratch as your guide.