I use Fortran since 1985 (University & Max Planck Institute). Later on I took along Fortran-95 as my language for almost everything, even for code generation and reversed engineering tooling (actually string manipulation programming), chess, Forex algorithmic trading (definitely a Fortran domain). I find this language much more readable and clear than C++. I use Java for scripting and GUI only. Now migrating to Modern Fortran 2003/2008 (Thanks Arjen Markus, nice book).