MinLog is a Java logging library. Key features:

* Zero overhead Logging statements below a given level
can be automatically removed by javac at compile time.
This means applications can have detailed trace and
debug logging without having any impact on the finished product.

* Simple and efficient The API is concise and the code
is very efficient at run-time.

* Extremely lightweight The entire project consists of a single
Java file with ~100 non-comment lines of code.