java - Neo4J in Netbeans: error with Iterator -


i'm trying learn nosql databases , love integrate netbeans, i'm trying make piece of tutorial code run on pc. encountered issue right @ end, i'm hoping can point me in right direction.

 package com.mycompany.neo4jdemo;  import org.neo4j.cypher.executionengine; import org.neo4j.cypher.executionresult; import org.neo4j.graphdb.graphdatabaseservice; import org.neo4j.graphdb.label; import org.neo4j.graphdb.node; import org.neo4j.graphdb.relationship; import org.neo4j.graphdb.relationshiptype; import org.neo4j.graphdb.resourceiterator; import org.neo4j.graphdb.transaction; import org.neo4j.graphdb.factory.graphdatabasefactory; import org.neo4j.helpers.collection.iteratorutil; import org.neo4j.kernel.impl.util.stringlogger;   public class main {     public enum nodetype implements label     {         person, course;     }      public enum relationtype implements relationshiptype     {         knows, belongsto;     }     public static void main(string[] args)     {         graphdatabasefactory dbfactory = new graphdatabasefactory();         graphdatabaseservice graphdb = dbfactory.newembeddeddatabase("c:/users/mifouche/documents/neo4j/default.graphdb");         //this database link given neo4j, correct link?          executionengine engine = new executionengine(graphdb, stringlogger.system);         executionresult result;          try(transaction tx = graphdb.begintx())         {             //clear database             engine.execute("match (n) optional match (n)-[r]-() delete n,r");              //create person bob node properties             node bobnode = graphdb.createnode(nodetype.person);             bobnode.setproperty("pid", 5001);             bobnode.setproperty("name", "bob");             bobnode.setproperty("age", 23);              //create person alice node properties             node alicenode = graphdb.createnode(nodetype.person);             alicenode.setproperty("pid", 5002);             alicenode.setproperty("name", "alice");              //create person eve node 1 property             node evenode = graphdb.createnode(nodetype.person);             evenode.setproperty("name", "eve");              //create course node properties             node itnode = graphdb.createnode(nodetype.course);             itnode.setproperty("id", 1);             itnode.setproperty("name", "it beginners");             itnode.setproperty("location", "room 153");              //create course electronics node properties             node electronicnode = graphdb.createnode(nodetype.course);             electronicnode.setproperty("name", "electronics advanced");              //set relationship between bob , alice             bobnode.createrelationshipto(alicenode, relationtype.knows);              //set relationship between bob , course             relationship bobrelit = bobnode.createrelationshipto(itnode, relationtype.belongsto);             bobrelit.setproperty("function", "student");              //set relationship between bob , electronics course             relationship bobrelelectronics = bobnode.createrelationshipto(electronicnode, relationtype.belongsto);             bobrelelectronics.setproperty("function", "supply teacher");              //set relationship between alice , course             relationship alicerelit = alicenode.createrelationshipto(itnode, relationtype.belongsto);             alicerelit.setproperty("function", "teacher");              //stamp transaction successful             tx.success();              //find person nodes on neo4j  database             result = engine.execute("match (n:person) return n");              //fill node columns values database (i think)             resourceiterator<node> columns = result.columnas("n");              //iterate through values returned             for(node node:iteratorutil.asiterable(columns))             {                 system.out.println(node + ": "+node.getproperty("name"));             }          }         graphdb.shutdown();     }  }

the error appears in line >> resourceiterator columns = result.columnas("n"); error give is: type of columnas(string> erroneous. can seen in image: http://s1294.photobucket.com/user/mfoosh/media/netbeansneo4jerror_zpsx2ygasqh.png.html

i changed of code basis tutorial couldn't find solution yet... tutorial can found here: https://www.youtube.com/watch?v=-g-vcszo_3g

(from basis expand knowledge able read in dataset in xml/csv format , create graph database in neo4j, , there try , determine various information bits findings, hints towards can me?)

you have use "scala.collection.iterator" iterating on nodes.

something : -

string query = "match (n) return n"; executionresult result = engine.execute(query); scala.collection.iterator<object> objresult = result.columnas("n");      while(objresult.hasnext()){     node cyphernode = (node)objresult.next(); ....... }

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