Graph graph = new TinkerGraph();
Vertex marko = graph.addVertex(1);
marko.setProperty("name", "marko");
marko.setProperty("age", 32);
Vertex stephen = graph.addVertex(3);
stephen.setProperty("name", "stephen");
stephen.setProperty("weight", 160.42);
stephen.setProperty("male", true);
Edge e = graph.addEdge(null, marko, stephen, "knows");
e.setProperty("weight", 0.2);