title: log4j2 changing configuration during runtime - already supported or custom class needed?
body: <p>I'm new to logging and wanted to use slf4j with log4j2 in a project of mine.
  The configuration is using a json file.</p>
  
  <p>I know that you can create a configuration during runtime with a ConfigurationFactory or use a file that will be checked if it has changed every time a log statement is made and a given time (or none) has passed.</p>
  
  <p>My question is regarding the json file. Will i have to write my own class to change that file using a json parser or will slf4j/log4j2 change the file for me somehow? If so how?</p>
  
  <p>I was reading through the documentation and googled, but didn't find the answer.</p>
  
  <p>I hope you can help me out. :)</p>