from michael yuang (Sun) :

So, Ruby must be replacing Java to become the “next” programming language just as Java “replaced” C++/COBOL and C++ “replaced” Fortran… …Well, in my opinion, this kind of talk has some serious logical problems. First of all, as the short history of high technology has proven again and again, the “superior” solution does not always win over “inferior” ones. In fact, the opposite is more likely to be true. The question regarding to Ruby versus Java is NOT how much more advanced RoR is compared with Java EE — the real question is whether Java EE is good enough for most developers.

At least he admits that moderns languages are far superior to Java language =) So, if j2ee is good enoughfor you, and you don’t want to improve you time, your productivity, don’t try new things =) keep with java.