Commons Logging

/App01/src/jp/sample/myapp/App01.java

 package jp.sample.myapp;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory; 
 
 public class App01 {
public static void main(String[] args) {
	Log log = LogFactory.getLog(App01.class);
	log.debug("DEBUG: DEBUG");
	log.fatal("DEBUG: FATAL");
	log.info( "DEBUG: INFO");
}
 }

/App01/src/log4j.properties

 log4j.rootLogger=INFO,myconsole
 log4j.appender.myconsole=org.apache.log4j.ConsoleAppender
 log4j.appender.myconsole.Target=System.out
 log4j.appender.myconsole.layout=org.apache.log4j.PatternLayout
 log4j.appender.myconsole.layout.ConversionPattern=%d [%t] %-5p %c(%L) - %m%n

/App01/src/commons-logging.properties

 org.apache.commons.logging.Log=org.apache.commons.logging.impl.Log4JLogger

参考

• http://commons.apache.org/logging/
• http://logging.apache.org/log4j/1.2/