This is the Java implementation of CCS.

CCS is a language for config files, and libraries to read those files and configure applications. The documentation is currently quite poor, but the Java and C++ implementations are mature and have been used in production for many years.

There's a presentation about the language here, but it's a little sketchy without someone talking along with it. A syntax reference is here.

Release artifacts are available in Maven:

<dependency>
    <groupId>net.immute</groupId>
    <artifactId>ccs</artifactId>
    <version>...</version>
</dependency>