When you have completed each section of the Java College, let me know that you would like to be certified. I'll verify that you completed all of the assignments to my satisfaction on that section and declare you "certified" for that section. Further, if you like, I'll put your name on a web page as proof for anyone who might not believe you.
At the time that I wrote that, I was planning on doing a lot more. If you look at the source for the cattle drive page you will see "plans" in the comments. And I would like to officially point out that I'm not doing the certificate thing.