One of the tasks for jdk7 is making sure that the shipped demos are up to speed.
(PRD #537450)

This effort includes
Removing usage of deprecated API:s
remove warnings in common IDE:s (ie netbeans, eclipse)
Introduce generics and other JDK 1.5 style code
Remove unused code
Manage imports, including
remove unused imports
change from javax.*-style imports to specific classes