In this video tutorial, you will learn how to use Apache log4j in java project to maintain a log file. I have explained the whole concept step by step with the help of a simple example. Please watch the complete video for a better understanding of the whole concept.
Properties file content:
// Root logger option ( replace // to # to make this line comment in properties file)
log4j.rootLogger=INFO, stdout
// Direct log messages to file
log4j.appender.file.File=C:\Users\amitk\Desktop\MyDownloads\logigng.log
log4j.appender.file.MaxFileSize=10MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L – %m%n
// Direct log messages to stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L – %m%n