Libraries

The lib directory houses class libraries that are needed by one or more of the development tools in the bin directory. Here is a list of files in a typical Java 8 lib directory:

Reviewing the directory listing does not provide a great level of granular insight. We can list the classes contained in any of the .jar files with the following command--jar tvf fileName.jar. As an example, here is the class listing generated from executing jar tvf javafx-mx.jar at the command line: