Anyone familiar with the C or JAVA languages?

And if you are, how often do you use those languages in building applications

I constantly use C. I work on a scientific library, and performance and portability are key to me.

You coulnd’t use a scientific library in another language?

This library is one of a kind and is written in C. Performance portability (high speed calculations on many different devices) is the whole goal of the library, so C is the natural choice.

We have Fortran77 and Python interfaces if people perfer other languages. It’s actually pretty common to write performance sensitive code in C and create interfaces for other languages.

Java is the primary language at my workplace (though it’s definitely not my primary!).

The phrasing ‘building applications’ makes me wonder what you’re including or excluding from your definition of an application.