JSP/JSTL: Versions and Standards

It baffles me. So many developers who use  infrastructure standards like servlets and JSP, but don't have any idea what versions of these they're coding to. They are blissfully unaware of whether they're targetting HTML4.01, XHTML-1 or HTML-5, CSS 2.1 or CSS 3, Servlet 3, 2.5 or 2.4...

Maybe I'm just funny that way - I think that managing dependencies in a tight, controlled way really matters! Otherwise things quickly spiral out of control, and you end up with that classic Design Pattern, "Big Ball of Mud".

On the other hand, I freely confess that I keep forgetting which pieces belong together. It's such a confusopoly.

So, mainly as a Note To Self, here's a quick lookup:

JSP/Servlet/JDK Versions

Servlets	JSP	JSTL	Java EE	Tomcat	Min. JDK
3.0	2.2	1.2	5	7.x	1.6
2.5	2.1	1.2	5	6.x	1.5
2.4	2.0	1.1	1.4	5.5.x	1.4

The list goes on, but if you still have systems in production running those archaic versions, you're probably in deeper trouble that mere version-confusion anyway!