logging messages are printed on file using FileAppender

Approach 2 :  (log msgs into file) 

printed log messages  in Program level.

Here we are developing a java class for creating log messages file under program level.

Example:

package com.dustbin.test;

import java.io.IOException;

import org.apache.log4j.Appender;

import org.apache.log4j.FileAppender;

import org.apache.log4j.Layout;

import org.apache.log4j.Logger;

import org.apache.log4j.PatternLayout;

import org.apache.log4j.PropertyConfigurator;

public class Sample {

static Logger logger=Logger.getLogger(Sample.class);

public static void main(String[] args)throws IOException {

Layout layout=new PatternLayout();

Appender appender=new FileAppender(layout,"d:/vijay.txt");

logger.addAppender(appender);

logger.info("info message");

logger.warn("warn message");

logger.error("error message");

logger.fatal("fatal message");

logger.debug("debug msg");

}

}

output:

log messages are printed into file by creating file using java program