API for exporting data to any support. The API supports File, Writer and OutputStream.

How to export a graph file

ExportController ec = Lookup.getDefault().lookup(ExportController.class);
ec.exportFile(new File("export.gexf"));
        

How to export to a String

ExportController ec = Lookup.getDefault().lookup(ExportController.class);
Exporter exporter = ec.getExporter("gexf");
CharacterExporter characterExporter = (CharacterExporter)exporter;
StringWriter stringWriter = new StringWriter();
ec.exportWriter(stringWriter, characterExporter);
String result = stringWriter.toString();