there is a webpage on the internet that we call "google".
It is a good example of what we call a "search engine".
You can access it from the address http://www.google.com
Ý even did a search for you, you can reach it from:
http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=Caesar+Cipher
if you want the same results, you can fill in the textbox in the
middle of the page, right above the two buttons:
"Google Search" and "I'm Feeling Lucky". You see?

If you *want* to learn java, you have to *think* about
your homework *yourself*. Not ask for anybody else to do it.

There are even people who are learning java  just by reading
tutorials and books, at least you have classnotes and teachers.

And searching from google is even easier than posting a mail
to a maillist and waiting for an answer.