jdbc result set iterator

ResultSet.java

public void Showsingle(){

        boolean next = true;
        try {
            Class.forName( DRIVER );
            c = DriverManager.getConnection( Connection, user, passwort );
            System.out.println( "Opened database successfully" );
            stmt = c.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
                    ResultSet.CONCUR_UPDATABLE);//Zum Durchiterieren TYPE_SCROLL_INSENSITIVE
            ResultSet rs = stmt.executeQuery( "SELECT * FROM standort;" );
            while (next == true) {

                System.out.println( "nächster eintrag n voriger p q for exit" );
                Scanner scanner = new Scanner(System.in);
                String scanner2 =  scanner.nextLine();
                if(scanner2.equals("n")) {
                    rs.next();
                    System.out.println( rs.getString( "sname" ) + " | " + rs.getString( "sort" ) + " | " + rs.getString( "sstrasse" ) + " | " + rs.getString( "sdurchwahl" ) + " | " + rs.getString( "smail" ) + " | " + rs.getString( "sland" ) );
                }
                else if(scanner2.equals("p") ){

                    rs.previous();
                    System.out.println( rs.getString( "sname" ) + " | " + rs.getString( "sort" ) + " | " + rs.getString( "sstrasse" ) + " | " + rs.getString( "sdurchwahl" ) + " | " + rs.getString( "smail" ) + " | " + rs.getString( "sland" ) );
                }else if(scanner2.equals("q"))
                {return;}
                else
                    {
                        System.out.println( "wrong entrance" );
                    }

            }

        } catch (Exception e) {
            System.err.println( e.getClass().getName() + ": " + e.getMessage() );
            System.exit( 0 );
        }
        return;
    }