title: Filtering Exceptions On Log4J 1.X
body: <p>Firstly must say, i cannot change my log4j.properties to log4j.xml or i cannot change my log4j version 1.x to 2.x due to some reasons. I need to ignore three exceptions for fileAppender i did two exceptions with stringfilter but it does not work third one. My Exception and property file is:</p>
  
  <pre><code>07 Apr 2017 | 11:45:26,499 | ERROR | SFSWorker:Ext:1 | Extensions |     | EXCEPTION
  com.smartfoxserver.v2.exceptions.SFSJoinRoomException: Join Error - Room is full: 19, Zone: { Zone: Batak } - Can't add User: ( User Name: d354e22339937548abb52ec442eb4eb4, Id: 3, Priv: 0, Sess: 88.253.243.151:33453 )  
  at com.smartfoxserver.v2.api.SFSApi.joinRoom(SFSApi.java:990)
  </code></pre>
  
  <p>My Property is:</p>
  
  <pre><code>log4j.appender.fileAppender.filter.1=org.apache.log4j.varia.StringMatchFilter
  log4j.appender.fileAppender.filter.1.stringToMatch=FORCE_UPDATE
  log4j.appender.fileAppender.filter.1.acceptOnMatch=false
  log4j.appender.fileAppender.filter.2=org.apache.log4j.varia.StringMatchFilter
  log4j.appender.fileAppender.filter.2.stringToMatch=REGULAR_UPDATE
  log4j.appender.fileAppender.filter.2.acceptOnMatch=false log4j.appender.consoleAppender.filter.3=org.apache.log4j.varia.StringMatchFilter
  log4j.appender.consoleAppender.filter.3.stringToMatch=Room%20is%20full
  log4j.appender.consoleAppender.filter.3.acceptOnMatch=false
  </code></pre>
  
  <p>I do not want to see exceptions that contains "Room is full" on my fileAppender. How can i do it?</p>