title: How to add external libraries in processing
body: <p>I have been using processing for a while and ran into an issue when I am trying to add an external java library. I followed all the steps provided online where I have to access the lib folder(processing-3.3) and add my library inside there. Unfortunately, my method did not work. Another problem I am facing is I don't know how to import this library. <a href="https://github.com/lemmingapex/trilateration#getting-trilateration" rel="nofollow noreferrer">This is the link to the library</a> and this is the .jar file <a href="https://github.com/lemmingapex/trilateration/releases" rel="nofollow noreferrer">link</a>. Can somebody help?</p>
  
  <p>Regards</p>