Java for Simulation

I wanted to seek people's advice on using Java for simulation of physical/numerical processes, for example (but not only), Monte Carlo simulations. Are there any distinct advantages/disadvantages in using Java over, say, Fortran, C++ or other, more common (indeed, more "acceptable") languages used for simulation?
I am not asking in regard to any specific problem, but in general. There must be people here who have a lot of experience in this area, and can offer some advice (eg. "Learn another language"), or point out things that I would never think of.
(I did a brief search for this, but only found questions relating to specific aspects of specific projects.)
Thanks :)

These comments are really good, and just what I was after :)
The obvious answer is that the order of raw speed will be, from fastest to slowest, FORTRAN, C, C++, Java. You already know this. [...]
The advantage [...] is object-oriented abstraction
This is probably at the core of it. I'd read that for most applications, speed is not too much of issue. I would probably comprimise speed if it meant I spent less time debugging and making sure it actually worked like it should (the worst bugs are the non-fatal ones). But for all I know that could change significantly for simulations. I guess there's also native compilers if speed is really slowing things down. (Do they help? Do people use them?)
The Colt distribution covers some areas good for sumulations not in the "standard" Java API's...
I use it a lot, it's very nice :)
What about using a mix of Java and other libraries, like Fortran or MatLab, for example? Is this widely done, or is it better to keep it all in one language?
As for the built in memory management, I hadn't actually thought about that.
I've picked up the impression somewhere along the line (I'm technically a student, see) that Java isn't a simulation language - to stick with Fortran, C or C++. I did deliberately post in a Java forum, not so much to get bias the other way, but to get a wider view. And also because I really like the language.
Incidentally, would anyone recommend any books on the subject?

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fredfromewa wrote:
So, does anyone know if real Java and Flash support is indeed coming in the future or am I going to have to either return or sell these IPADS and go switch a competitor...
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....they could easily have a much larger majority of the market with tablets by supporting Java and Flash.
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Hi Shane,
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I am a newbie to java card .I am doing project on java card based sim.
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Is there an equivalent statement in Java for this PL/SQL stmt?

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Something like
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Distributed Database Consulting, Inc.
http://www.ddbcinc.com/askDDBC

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Thanks...Colin

Dear Craig,
Macbook Pro 2.4GHz Intel Core 2 Duo 4 GB RAM
I'm sure that this is 64-bit
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Dear Craig,
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I had moved the Java SE 6 to the top in both Plugin and Applications. The
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Hi, Colin,
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4. Open Terminal
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6. Try to start CF again
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supposed to work. With the Java Preferences utility, you're visually setting a
default JVM (you can do it with commands in Terminal but this is much faster
and easier).
If CF still won't start, look for the jvm.config file in your CF application
folder (try /Applications/ColdFusion8/bin or
/Applications/ColdFusion8/runtime/bin -- the latter is where a jvm.config file
is on my machine for a particular version of CF that's installed similar to
yours). You can override the JVM in this file but, hopefully, that won't be
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Processor Speed:
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Hi Senthil,
Check these things :
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2) try giving this
10.10.0.55
sapmnt
trans
edixiin
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Regards
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