LOG4J Filtering of only One Level

Question

i am using the LOG4J utitlity given by Apache. i want only the logger.debug() statements output to be sent to a text log file.
if i execute the below example, the output entered into the log file is DEBUG - DEBUG
INFO - INFO
WARN - WARN
ERROR - ERROR
FATAL - FATAL
but according to my requirement, the output should be
DEBUG - DEBUG.
please can any one help me out to provide solution.
import org.apache.log4j.*;
import java.io.*;
public class simpandfile {
     static Logger logger = Logger.getLogger(simpandfile.class);
     SimpleLayout layout = new SimpleLayout();
     FileAppender appender = null;
     public simpandfile() {
          super();
          try {
               appender = new FileAppender(layout, "C:\\output.txt", false);
          } catch (IOException e) {
     public void test1() {
          try {
               logger.addAppender(appender);
               logger.setLevel(Level.DEBUG);
               logger.log(Level.toPriority(1), "sss");
               logger.debug("DEBUG");
               logger.info("INFO");
               logger.warn("WARN");
               logger.error("ERROR");
               logger.fatal("FATAL");
          } catch (Exception e) {
     public static void main(String args[]) {
          simpandfile saf = new simpandfile();
          saf.test1();
Regards,
Sudheer Raju.

Answer 1

AFAIK this is not possible with log4j except by writing a custom Logger subclass which is not very difficult.
But, your question doesn't have anything to do with JSF and would had been better asked in log4j's forum/mailinglist.
-Henri