title: log4j:WARN No such property [conversionPattern] in org.apache.log4j.RollingFileAppender
body: <p>Can someone help me with this error message. I don't know why my application is always showing these warning</p>
  
  <pre><code>log4j:WARN No such property [conversionPattern] in org.apache.log4j.RollingFileAppender.
  </code></pre>
  
  <p>My application is a simple hibernate project</p>
  
  <p><strong>Here is the complete properties file</strong></p>
  
  <pre><code># Root logger option
  log4j.rootLogger=DEBUG, A1
  
  # Direct log messages to a log file  
  log4j.appender.A1=org.apache.log4j.RollingFileAppender
  log4j.appender.A1.File=logs/HibernateAnnotation.log 
  log4j.appender.A1.MaxFileSize=1MB
  log4j.appender.A1.MaxBackupIndex=1
  log4j.appender.A1.layout=org.apache.log4j.PatternLayout
  log4j.appender.A1.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n 
  
  # Log everything. Good for troubleshooting  
  log4j.logger.org.hibernate=warn  
  </code></pre>