how to make log4j to write to the console as well

Your root logger definition is a bit confused.See the log4j documentation.

This is a standard Java properties file, which means that lines are treated as key=value pairs. Your second log4j.rootLogger line is overwriting the first, which explains why you aren't seeing anything on the console appender.

You need to merge your two rootLogger definitions into one. It looks like you're trying to have DEBUG messages go to the console and INFO messages to the file. The root logger can only have one level, so you need to change your configuration so that the appenders have appropriate levels.

While I haven't verified that this is correct, I'd guess it'll look something like this:

log4j.rootLogger=DEBUG,console,filelog4j.appender.console=org.apache.log4j.ConsoleAppenderlog4j.appender.file=org.apache.log4j.RollingFileAppender

Note that you also have an error in casing - you have console lowercase in one place and in CAPS in another.

Your log4j File should look something like below read comments.

# Define the types of logger and level of logging    log4j.rootLogger = DEBUG,console, FILE# Define the File appender    log4j.appender.FILE=org.apache.log4j.FileAppender    # Define Console Appender    log4j.appender.console=org.apache.log4j.ConsoleAppender    # Define the layout for console appender. If you do not # define it, you will get an error    log4j.appender.console.layout=org.apache.log4j.PatternLayout# Set the name of the file    log4j.appender.FILE.File=log.out# Set the immediate flush to true (default)    log4j.appender.FILE.ImmediateFlush=true# Set the threshold to debug mode    log4j.appender.FILE.Threshold=debug# Set the append to false, overwrite    log4j.appender.FILE.Append=false# Define the layout for file appender    log4j.appender.FILE.layout=org.apache.log4j.PatternLayout    log4j.appender.FILE.layout.conversionPattern=%m%n

This works well for console in debug mode

log4j.appender.console=org.apache.log4j.ConsoleAppenderlog4j.appender.console.Threshold=DEBUGlog4j.appender.console.Target=System.outlog4j.appender.console.layout=org.apache.log4j.PatternLayoutlog4j.appender.console.layout.conversionPattern=%d{yyyy-MM-dd HH:mm:ss,SSS} %-5p - %m%n