I think the point is, that asking "hey, how does ford compare to a toyota" at a toyota message board will not yield very much usefull information for comparisons sake.
In my opinion, at this point in time, c++ game development is more well established, its pitfalls are more well know, the tools are more mature, and, not least of all, most experienced game developers program in it. However, java is gaining in both feature richness (the available toolkits) as well as in speed (To the point where I would say it is not an issue anymore when deciding in which programming language to program in.). In addition, java has other advantages. I feel that java is more standarized, complete and well tested for the features it provides. (The API package. kitchen sink anyone?) Also, everyone in the CS field learns CS through java nowadays, so the potential developer base for developing great games and great gaming toolkits is huge. Programming games in java, however, is the least mature if you compare it to other areas where java is used. (enterprise application development mostly). I love java though, and although I only program games and demo's and toolkits as a hobby, I see a bright future for java game development.
I'm intersted in the future of Java. If Java doesn't have a future who would then be interested in using it now?
To start it off I would like to reply to a post in another thread.
I could add a few things. Hardware is going the Java way. The inherent concurrency of Java which may have been a bottleneck on single processor systems may turn out to be a real advantage now when more and more desktops get dual core processing.
Also Java's emulation of native GUI's may very well turn out to be a great advantage for Java. The reason is that with more advanced graphics hardware the GUI emulation can be performed by the graphics processor rather than by the main processor, freeing it up for other chores. In principle Swing could put less pressure on the main processor than will a native GUI.