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.
Im not certain. The best thing to do when you have questions like this is to just try it. Try replacing // Other goodies.... with something like this: foo.add(new java.awt.Button("bar"); and see if you get a compile error. I might even try it myself