Recall that any class whose name ends with Plugin.class is called a plugin core class. JAR files with no plugin core classes are also loaded by jEdit; the classes they contain are made available to other plugins. Many plugins that rely on third-party class libraries ship them as separate JAR files. The libraries will be available inside the jEdit environment but are not part of a general classpath or library collection when running other Java applications.

A plugin that bundles extra JAR files must list them in the plugin.class name.jars property. See the documentation for the EditPlugin class for details.