Actually I was willing to keep my mouth shut but you are right.
I have made the experience once and I have seen that this "+" approach
was eating up the memory (using JDK1.3). I had to rewrite a whole bunch
of sql statements in java  (the former developer had used this "+" heavily)
to get rid of this problem. We had the problem  of running out of memory
when too many users were online and using the application.

But since David said that it is no problem and even suns says it is no
problem I was about to keep calm.
Let them run into the pitfalls and they will learn. It is always the best
way to learn from your own experiences rather than others.

BTW: What happened to the weekly "Which IDE is the best" discussion? I am
already missing it.....