Luaj

If you're looking for a quick and efficient Lua interpreter that's firmly rooted in the Java platform, look no further than Luaj. This interpreter is designed to work smoothly on both J2ME and J2SE, and comes packed with a wide range of versatile libraries for basic, package, string, table, math, io, os, debug, and coroutine packages.

One of the standout features of Luaj is its compiler, which enables fast and highly optimized code execution, even when working with large or complex scripts. Additionally, the interpreter offers luajava bindings, allowing for seamless integration with your existing Java codebase.

Another powerful feature of Luaj is its support for JSR-233 pluggable scripting engine bindings. This enables you to use Luaj as a scripting engine for a wide range of Java applications, adding even more flexibility and extensibility to your programming toolkit.

All in all, if you need a Lua interpreter that can keep up with the demands of modern Java development, Luaj is an excellent option. With its fast, lightweight performance, extensive library support, and flexible integration options, it's sure to become an indispensable tool in your coding arsenal.