{

public static void main(String[] args)

{

// If you want to check your Gremlin version, uncomment the next line

//System.out.println("Gremlin version is: " + Gremlin.version());

// Create a new (empty) TinkerGrap

TinkerGraph tg = TinkerGraph.open() ;

// Create a Traversal source object

GraphTraversalSource g = tg.traversal();

// Add some nodes and vertices - Note the use of "iterate".

g.addV("airport").property("code","AUS").as("aus").

addV("airport").property("code","DFW").as("dfw").

addV("airport").property("code","LAX").as("lax").

addV("airport").property("code","JFK").as("jfk").

addV("airport").property("code","ATL").as("atl").

addE("route").from("aus").to("dfw").

addE("route").from("aus").to("atl").

addE("route").from("atl").to("dfw").

addE("route").from("atl").to("jfk").

addE("route").from("dfw").to("jfk").

addE("route").from("dfw").to("lax").

addE("route").from("lax").to("jfk").

addE("route").from("lax").to("aus").

addE("route").from("lax").to("dfw").iterate();

//System.out.println(g);

//System.out.println(g.V().valueMap(true).toList());

// Simple example of how to work with the results we get back from a query

List<Map<Object,Object>> vm = new ArrayList<Map<Object,Object>>() ;

vm = g.V().valueMap(true).toList();

// Dislpay the code property as well as the label and id.

for( Map m : vm)

{

System.out.println(((List)(m.get("code"))).get(0) + " " + m.get(T.id) + " " + m.get(T.label));

}

System.out.println();

// Display the routes in the graph we just created.

// Each path will include the vertex code values and the edge.

List<Path> paths = new ArrayList<Path>();

paths = g.V().outE().inV().path().by("code").by().toList();

for (Path p : paths)

{

System.out.println(p.toString());

}

// Count how many vertices and edges we just created.

// Using groupCount is overkill when we only have one label

// but typically you will have more so this is a useful technique

// to be aware of.

System.out.println("\nWe just created");

List verts = g.V().groupCount().by(T.label).toList();

System.out.println(((Map)verts.get(0)).get("airport") + " airports");

List edges = g.E().groupCount().by(T.label).toList();

System.out.println(((Map)edges.get(0)).get("route") + " routes");

// Note that we could also use the following code for a simple

// case where we are only interested in specific labels.

Long nv = g.V().hasLabel("airport").count().next();

Long ne = g.E().hasLabel("route").count().next();

System.out.println("The graph has " + nv + " airports and " + ne + " routes");

// Save the graph we just created as GraphML (XML) or GraphSON (JSON)

try

{

// If you want to save the graph as GraphML uncomment the next line

tg.io(IoCore.graphml()).writeGraph("mygraph.graphml");

// If you want to save the graph as JSON uncomment the next line

//tg.io(IoCore.graphson()).writeGraph("mygraph.json");

}

catch (IOException ioe)

{

System.out.println("Graph failed to save");

}

}