Hmmm ... if you want fast calculation you should try Fortran 95, I bet you will get a 10x speed improvement versus the Java version. Also the learning curve is not so step as learning assembler and your code is portable to any OS.<p>From my experience nothing beats Fortran at calculations. If your are using Linux you can use Intel Fortran which is way faster than gfortran and it is free for Linux users.<p>Paul