This package contains the Tokenizer and Parser classes to create a datastructure from an Reader containing a Graphviz document.
The typical usage:

File f = new File( "file.viz" );
FileReader in = new FileReader(f);
Parser p = new Parser();            
p.parse(in);
ArrayList<Graph> graphlist = p.getGraphs();

graphlist contains a list of com.alexmerz.graphviz.Graph objects. Instead of a Reader object, you can also provide a StringBuffer