platform independent java web application

What are necessary requirements i need to consider during Coding, to make my web application portable on any Application server on any Operating System.Could anybody provide any information /URL
[215 byte] By [raghuveer_vellankia] at [2007-10-3 0:17:10]
# 1
Java is platform independent.I have only one tip: if you're using local file paths, I recommend to use relative paths and forward slashes. This will work in all operating systems. Otherwise put it in a propertiesfile which can be managed outside the webapplication.
BalusCa at 2007-7-14 17:08:05 > top of Java-index,Enterprise & Remote Computing,Web Tier APIs...