Neo4j installation and configuration tutorial

package neo4j;

import ;
import ;

import ;

import org.;
import org.;
import org.;
import org.;
import org.;
import org.;
import org.;

public class test {


 public enum RelTypes implements RelationshipType{
  KNOWS
 }

 private static void registerShutdownHook( final GraphDatabaseService graphDb )
 {
  // Registers a shutdown hook for the Neo4j instance so that it
  // shuts down nicely when the VM exits (even if you "Ctrl-C" the
  // running example before it's completed)
  /*To ensure the correct shutdown of the neo4j database, we can add a close hook method
    * registerShutdownHook.  This method means adding a closed one in jvm
    * Hook, when jvm is closed, all the methods that have been set in the system will be executed
    * AddShutdownHook hooks, jvm will be closed only after the system has executed these hooks.
    * So these hooks can perform memory cleaning, object destruction and other operations when jvm is closed.  */
  ().addShutdownHook( new Thread()
  {
   @Override
   public void run()
   {
    ();
   }
  } );
 }

 public static void main(String[] args) throws IOException {

  ( new File( "db" ) ); 
  GraphDatabaseService graphdb=new GraphDatabaseFactory().newEmbeddedDatabase("db");
  Relationship relationship;
  Transaction tx=();
  try{
   Node node1=();
   Node node2=();

   ("message", "Hello");
   ("message", "World");

   relationship = (node2, );
   ("message", "brave neo4j");


   ();
   ("successfully");
  }
  finally{
   ();
  }
  registerShutdownHook(graphdb);
 }

}