Basic Customization > Windchill Customization Basics > Managing Customizations > Best Practices for Customizing Files Supplied by PTC > Managing Client JAR Files > Using the Client JAR Architecture > Re-using an Existing Root JAR
  
Re-using an Existing Root JAR
If you have decided to directly re-use an existing root JAR for the applet(s) in question, then all you have to do is list this JAR in the plug-in tag.