RemoteDatabase db=new RemoteDatabase("localhost", 
                                                    2480, 
                                                    "test_db", 
                                                    "root", 
                                                    "password");

           //The below commented out section generates exception                                         
        /*
        * Exception in thread "main" com.arcadedb.remote.RemoteException: 
        * Error on executing remote operation CREATE EDGE ZEdg FROM :fromRid TO :toRid 
        * (cause:com.arcadedb.exception.CommandExecutionException detail:Invalid vertex for edge creation: #9:0)
        at com.arcadedb.remote.RemoteHttpComponent.manageException(RemoteHttpComponent.java:446)
        at com.arcadedb.remote.RemoteHttpComponent.httpCommand(RemoteHttpComponent.java:170)
        at com.arcadedb.remote.RemoteDatabase.databaseCommand(RemoteDatabase.java:461)
        at com.arcadedb.remote.RemoteDatabase.command(RemoteDatabase.java:398)
        at com.arcadedb.remote.RemoteDatabase.command(RemoteDatabase.java:383)
        at com.optimas.EdgeCreationtest.main(EdgeCreationtest.java:29)
        */
        /*String statement="CREATE EDGE ZEdg FROM :fromRid TO :toRid";

        String fromVtxRid="#9:0";
        String toVtxRid="#33:0";

        Map<String, Object> params=new HashMap<>();
        params.put("fromRid", new RID(null, fromVtxRid));
        params.put("toRid", new RID(null, toVtxRid));

        db.command("sql", statement, params);
        */
        //This section works and creates the edge
        String statement="CREATE EDGE ZEdg FROM #9:0 TO #33:0";
        db.command("sql", statement);

        System.out.println("Done ... ");