LISP

>Lisp is now used in many applications where efficiency is not the central concern. For example, Lisp has become a language of choice for operating-system shell languages
>used in applications where efficiency is not the central concern. For example,  operating-system

so... was Vista coded in LISP?

There were five primary goals in the creation of the Java language:[12]

1. It should use the object-oriented programming methodology.
2. It should allow the same program to be executed on multiple operating systems.
3. It should contain built-in support for using computer networks.
4. It should be designed to execute code from remote sources securely.
5. It should be easy to use by selecting what were considered the good parts of other object-oriented languages.

I didn't know Java is this cool.