Description:

Janino is a compiler that reads a JavaTM expression, block, class body,
source file or a set of source files, and generates Java bytecode that is
loaded and executed directly. Janino is not intended to be a development
tool, but an embedded compiler for run-time compilation purposes, e.g.
expression evaluators or "server pages" engines like JSP. Janino is
integrated with Apache Commons JCI ("Java Compiler Interface") and JBoss
Rules / Drools. Janino can also be used for static code analysis.