On November 2, 2002 at Chapman University and again on May 31, 2003 at California State University Northridge I gave workshop talks on transitioning from C++ to Java for the high school AP course. You can down load PowerPoint slides with the material from those workshops or you can view the slides on line.
The ftp site is: ftp-cse.ucsd.edu
The path to the files is: /pub/faculty/savitch
The file is: APJava.ppt