install and run tomcat server

http://www.stardeveloper.com/articles/display.html?article=2001060801&page=1

random numbers API

http://leepoint.net/notes-java/algorithms/random/random-api.html

random string generator another link

http://stackoverflow.com/questions/41107/how-to-generate-a-random-alpha-numeric-string-in-java

random password in javascript

http://www.javascriptkit.com/script/script2/passwordgenerate.shtml

radom string generator in C# and VB

http://devpinoy.org/blogs/keithrull/archive/2005/03/10/177.aspx

random string generator

http://www.codewalkers.com/c/a/User-Management-Code/random-string-generator-key-generator/

java tutorials video

http://www.javaj2ee.net/core-java-video-tutorial?start=1