i know this may be a newbie qestion, but I'm having issues with setting up Log4J:
I want to run a log4j demo, and here's my code:
import org.apache.log4j.Logger;
import org.apache.log4j.BasicConfigurator;
public class HelloLOG4j {
private static final Logger logger = Logger.getLogger(Hello.class);
public static void main(String argv[]) {
BasicConfigurator.configure();
logger.debug("Hello world.");
logger.info("What a beatiful day.");
}
}
I set my Classpath:
C:\Users\Adel\Downloads\apache-log4j-1.2.17\log4j-1.2.17.jar
in both System and User var's
But when I run my program I still get
errors found:
File: C:\Users\Adel\Desktop\various_topics\JavaProjects\HelloLOG4j.java [line: 2]
Error: package org.apache.log4j does not exist
I know that I set classpath right – if I run cmd line:
C:\Program Files\Java\jdk1.6.0_20>print %LOG4J_HOME%
C:\Users\Adel\Downloads\apache-log4j-1.2.17\log4j-1.2.17.jar is currently bein
g printed
Best Answer
You need to add log4j home to the classpath as the JVM needs the path to the log4j classes
if on windows, you can use
On linux/ ubuntu (much better than windows for development & servers)
then run your app after adding other paths to classpath like
You do not need to add log4JHOME again - as
%classpath%;
will add to the current classpath.LOG4J_HOME is not known to Java. It is just used by log4j in case of auto config/default config.
On a side note try using the new log4j2 !