Showing posts with label enums. Show all posts
Showing posts with label enums. Show all posts

Wednesday, October 31, 2007

Maven 2 quirks and the "bandwagon"

I recently found myself developing (and using) a lot of small tag libraries to make my life easier when it comes to developing my web applications. The only thing that really gets me is that when I write these tag libraries, I have to manually update all of the TLD (tag library descriptor) files that are necessary for using the tags in JSPs. This irks me and it occurs to me that there's no reason I can't have Maven generate the TLDs for me based on annotations I place on the tag classes. The only problem with this is that no such plugin exists, so I figured that as a foray into Maven plugin development, I'd try making such a plugin as my first try. It is then that I ran across a rather large and bothersome quirk with Maven : it's not entirely ready for Java 5 and up. In fact, rather than using proper Java 5 annotations, it uses XDoclet comment annotations to provide metadata for building plugins, but that's not the quirk. The real quirk is that it can't handle having Java 5 annotations in the same project as the plugin. It can handle Java 5 enums just fine, but not annotations, which seems rather strange to me.

This is all part of the bigger problem of companies not keeping themselves up to date with the latest Java technology and staying with Java 1.4.2 and earlier. Sun has done a great job of maintaining backward compatibility, and there's (almost) no reason that companies shouldn't be upgrading the JVMs on their servers to the latest and greatest versions. The only real reason I can think of is that somewhere in their code, they've used variables named 'enum' which becomes a Java keyword in Java 5 and up (aka Java 1.5, 1.6, etc), and this can be mitigated by refactoring the code. Hell, Eclipse makes that job quick and easy, especially when you really know your keyboard shortcuts. I'm fortunate enough to be able to use Java 6 (and very quickly upgrade to Java 7 as soon as it's released and stable). As much as this is going to make me a snob, I'm getting really tired of being dragged down by other people's need for backward compatibility (and hence also tool developers' appeasement of these people which then affects me). Seriously people, get your act together.

Wednesday, October 24, 2007

Java enums are even cooler than I ever knew !

A quick note on Java enums : I discovered today that not only can enums have methods (which is exceedingly useful to begin with), but that you can individually override methods on a per-enum-value basis! That's so cool. I read it on this blog.

Wednesday, September 05, 2007

Weak Java

I rarely (if ever) use switch statements, mainly because if their use is required, generally a very poor design decision has been made. But sometimes they're the right choice. That said, I was forced to use a switch statement in some of my code today, and found that Java switch statements can only switch primitive ints and enums in the java language. Not even longs or shorts. That is the weakest shit I've ever encountered. Are you fucking retarded Sun ?

Sorry, I just had to bitch about it, because it's just that stupid.