Charles L. Perkins is the Founder and Chief Scientist of Virtual Rendezvous. He co-wrote a popular book on Java in October, 1995 https://www.cs.cmu.edu/afs/cs.cmu.edu/user/gchen/www/download/java/LearnJava.pdf, and created some (now historical) Java class hierarchy diagrams https://web.archive.org/web/19990203010314/http://rendezvous.com/java/.
An edited except of "The Big Picture" section (thru "The Bytecodes Themselves" ) of the book was published in the Premiere issue of Java Report, March 1996. He has written several other books, including a number of volumes in the "Teach Yourself Java" series.
1996:
1997:
2000: Ad Hoc Networking. Boston, MA: Addison-Wesley, 2000.