Log4j2 was obviously inspired by Log4j1 but was completely rewritten. It still has some differences and it is completely different in terms of behavior and performance. Here is the concept mapping for log4j2:
| Concept | Name |
| Logger | Logger |
| Logger Factory | LoggerManager |
| Handler | Appender |
| Filter | Filter |
| Formatter | Layout |
| Level | Level |
The configuration has some fallbacks, but the default file is looked up in the classpath and is called log4j2.xml. It uses a different syntax than the XML version of Log4j1, based on the new plugin system of Log4j2, to have a nicer syntax (less technical):
<?xml version="1.0" encoding="UTF-8"?><Configuration status="WARN"> <Appenders> <Console name="stdout" target="SYSTEM_OUT"> <PatternLayout ...
