# Uses of Class org.apache.poi.util.POILogger (POI API)

## Uses of Class
org.apache.poi.util.POILogger

Packages that use POILogger
org.apache.poi.util: Top-level util package are classes that are useful throughout the project.

Uses of POILogger in org.apache.poi.util

Subclasses of POILogger in org.apache.poi.util
`class` `CommonsLogger` A logger class that strives to make it as easy as possible for developers to write log calls, while simultaneously making those calls as cheap as possible by performing lazy evaluation of the log message.
`class` `NullLogger` A logger class that strives to make it as easy as possible for developers to write log calls, while simultaneously making those calls as cheap as possible by performing lazy evaluation of the log message.
`class` `SystemOutLogger` A logger class that strives to make it as easy as possible for developers to write log calls, while simultaneously making those calls as cheap as possible by performing lazy evaluation of the log message.

Methods in org.apache.poi.util that return POILogger
`static POILogger` `POILogFactory.getLogger(java.lang.Class theclass)` Get a logger, based on a class name
`static POILogger` `POILogFactory.getLogger(java.lang.String cat)` Get a logger, based on a String

Copyright © 2003 Apache Software Foundation.