To show the log in both console and file create log4j.properties file on scr folder then paste the following code inside the properties file.
log4j.rootLogger=DEBUG,console, FILE
log4j.appender.FILE=org.apache.log4j.FileAppender
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.Target=System.out