| Class | Description | 
|---|---|
| CachingLogger | 
 The caching logger stores all of the messages. 
 | 
| DefaultLogger | 
 The default logger prints messages on stderr. 
 | 
| Logger | 
 The abstract class that all concrete loggers must extend. 
 | 
| SystemLogger | 
 The system logger routes messages to another logging framework. 
 | 
This package provides a simple logging framework that can either write directly to stderr or be linked to a more conventional logging framework.