This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
I believe you'll find these classes in the JCE API (http://java.sun.com/products/jce/index.html). You can double check by either scanning the java docs or examining the contents of the jar file using the command jar -tf xxx.jar or, if you want to examine a specific package (i.e. is this package in there?), do this. jar -tf xxx.jar com.sun This will only list classes below that package. Hope this helps. Sean