public int sizeOfLoginColumn() throws SQLException {
        int size = 0;
        try {
            connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/usersdb?"
                    + "user=root&password=");
            String sql = "select count(*) from users";
            Statement ps = connection.createStatement();
            rsContact = ps.executeQuery(sql);
                size = rsContact.getInt(1);
                System.out.println(size);
        } catch (SQLException ex) {
            Logger.getLogger(DataBaseConnection.class.getName()).log(Level.SEVERE, null, ex);
        }
        return size;
    }
}