Config log4j in standalone app

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1. First make sure you've added the log4j.jar

2. config log4j.xml and log4j.properties

Show an example:

log4j.xml

<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE log4j:configuration SYSTEM "log4j.dtd"><log4j:configuration xmlns:log4j='http://jakarta.apache.org/log4j/'><appender name="CA" class="org.apache.log4j.ConsoleAppender"><layout class="org.apache.log4j.PatternLayout"><param name="ConversionPattern" value="%-4r [%t] %-5p %c %x - %m%n" /></layout></appender><root><level value="debug" /><appender-ref ref="CA" /></root></log4j:configuration>

log4j.properties

log4j.rootLogger=DEBUG, CAlog4j.appender.CA=org.apache.log4j.ConsoleAppenderlog4j.appender.CA.layout=org.apache.log4j.PatternLayoutlog4j.appender.CA.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n

Done!

http://www.dzone.com/tutorials/java/log4j/log4j-xml-configuration.html

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