No appenders could be found for logger(log4j)?

Question

I have put log4j to my buildpath, but I get the following message when I run my application:

log4j:WARN No appenders could be found for logger (dao.hsqlmanag         


        

Answer 1

I get the same error. Here the problem which leads to this error message:

I create some objects which use the Logger before I configure the log4j:

Logger.getLogger(Lang.class.getName()).debug("Loading language: " + filename);

Solution: Configure the log4j at the beginning in the main method:

PropertyConfigurator.configure(xmlLog4JConfigFile); 
// or BasicConfigurator.configure(); if you dont have a config file