I actually use GWT, and my advice is to be very careful. I've managed to have bugs that show up in the browser that I have had an amazingly difficult time trac

I actually use GWT, and my advice is to be very careful. I've managed to have bugs that show up in the browser that I have had an amazingly difficult time tracking down. You get a pile of javascript from your pile of java, and it can be hard to tell where the bug is at all. Complexity is dangerous, and GWT is fantastically complicated. I haven't run into a GWT compilation bug, but I'm sure there exists such a thing, and the day I run into it I will simply sit down and cry because I have no other recourse. (But when it works, I guess its kind of a nice way to build UIs, if you like Java-style UI APIs... I've never met such a person, but I'm sure they exist ;))