I found this tutorial pretty useful, creating a PDF using iText without storing it, but stream out to the client browser.

Here the tutorial: Dynamically Creating PDFs in a Web Application

Recently facing some problems on PNG transparent images in IE6 browser. The solution is include this javascript:
https://gist.github.com/fabiolee/017da13a2ba4d6b87a830b1e2c613cd3.js
It seem like this javascript is quite common in used when I try make a Google search. This script change all the images object…

I am having problem with this SQL in MS Access:
https://gist.github.com/fabiolee/02885b96cfb0a025cc69dd45e5161880.js
This query seem like working fine in most SQL software but not in MS Access. Either I or MS Access suck.

I used AccessDataSource tag in ASP.NET to connect a Microsoft Access Database, accidentally found this weird problem. The code is like this:
https://gist.github.com/fabiolee/761c0cf6bf4482f7ad8fe8d6427dbfbd.js
This code having no problem on localhost IIS server, but when…

I found this cache problem during my development. Example of how this problem can be happen:
https://gist.github.com/fabiolee/1e32db8fe65182cd96f95c05d6d54fc2.js
If these two java files compiled into class files previously, then we might need to be careful when changing the “planId”…

I was having some problem with a SQL query few hour ago, it required me to write a sub query to execute it correctly.
https://gist.github.com/fabiolee/727db640ae33c4be384ce0a7c2597ab6.js
Hmm, not good, heavy process.