neo4j - What is the less expensive way to Traverse Through ExecutionResult in neo4j?

Question

I am very new in Neo4j data base .

I am taking above site as a reference and try to create nodes of data storing and retrieving the nodes and there respective properties.

For Retrieving the nodes i am using following method :

ExecutionResult result = engine.execute(query,map);
Iterator<Object> columnAs = result.columnAs("n");

while(columnAs.hasNext())
      {
        Node n = (Node)columnAs.next();
           for (String key : n.getPropertyKeys()) {
                Sysout(key);
                Sysout(n.getProperty(key));
            }
      }

For Executing above while loop it takes lots of time it takes almost 10 - 12 sec to traverse 28k nodes.

I am not sure whether I am following proper method or is there any other alternative for this.

Thanks in advance.