This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
NetBeans includes such a thing, yes; it's called "Matisse", and from what I hear it's about the best one that exists for Java. Most people will tell you, though, that visual GUI designers aren't used much in the Java space; there's always so much more you can do, and do well, by hand. Not to mention that in general, generated GUI code is often ugly and hard to maintain.
I'm going to move this to our Swing/AWT/SWT/JFace forum, where it's a bit more on-topic.