How to configure Log4j in JDev 11g
Posted: July 10, 2011 Filed under: ADF BC, ADF Faces, ADF Model 5 CommentsEver wanted to use log4j in your adf project ? Well though Oracle doesn’t recommends the use of log4j, i say its purely your choice to use it or not.
So how do we configure log4j in adf ? Pretty simple..just follow these steps
1) Add log4j jars in the project library
2) Create a file log4j.properties in your Application Sources Directory (this folder is seen in jdev – in both ViewController and Model Folder).
For Model project this file has to be present at <path of model project>Model\src.
For ViewController project this file has to be present as <path of model project>ViewController\src
3) Paste the following contents
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# Set root logger level to INFO and its only appender to ConsoleOut.
log4j.rootLogger=INFO,ConsoleOut,F
# ConsoleOut is set to be a ConsoleAppender.
log4j.appender.ConsoleOut=org.apache.log4j.ConsoleAppender
# ConsoleOut uses PatternLayout.
log4j.appender.ConsoleOut.layout=org.apache.log4j.PatternLayout
log4j.appender.ConsoleOut.layout.ConversionPattern=%-5p: [%d] %c{1} – %m%n
log4j.logger.org.apache.jsp=DEBUG
log4j.appender.F=org.apache.log4j.FileAppender
log4j.appender.F.File=C:/Logs/Logger.log
log4j.appender.F.layout=org.apache.log4j.PatternLayout
log4j.appender.F.layout.ConversionPattern=%d{MM-dd@HH:mm:ss,SSS} %-5p (%13F:%L) %3x – %m%n
#Addon for
com.sun.faces.level=FINE
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You can download the working example from here
P.S: A good tutorial about ADF Logger is available here
Spot Learning 
HI, I am trying to use Socket appender with UDP. I get an error in my server side while trying to read the message sent by client program.
Below is my code.
ByteArrayInputStream bis = new ByteArrayInputStream(recievedPakets);
ObjectInputStream obj = new ObjectInputStream(bis);
LogEvent logEvent = (LogEvent) obj.readObject();
System.out.println(logEvent.toString());
Below error is throwing when I run the code.
ClassNotFoundException Error : java.lang.ClassNotFoundException: org.apache.logging.log4j.core.impl.Log4jLogEvent$LogEventProxy
Are you sure the required libraries(log4j( are included with the seerver side code ?