The graph package provide simple tools for creating and displaying graphs.
The API specification can be found at:
API Specifications for package graph
The source files include:
You will also need to download and install the JGraph library from JGraph Ltd.. Complete instructions are in the API specifications.
All of the .java files are in a package called "graph". Therefore you will need to download these files into a directory called "graph" that is located in a paretn directory that is listed in your classpath environment variable. Do not put your own files in this directory.