public static List<List<Object>> resultSetToNestedList(ResultSet rs, boolean includeColumnNames) {
        try {
            // To contain all rows.
            List<List<Object>> rows = new ArrayList<List<Object>>();
            ResultSetMetaData metaData = rs.getMetaData();
            int numberOfColumns = metaData.getColumnCount();

            // Include column headers as first row if required
            if (includeColumnNames) {
                List<Object> columnNames = new ArrayList<Object>();

                // Get the column names
                for (int column = 0; column < numberOfColumns; column++) {
                    columnNames.add(metaData.getColumnLabel(column + 1));
                }
                rows.add(columnNames);
            }

            // Get the data
            while (rs.next()) {
                List<Object> newRow = new ArrayList<Object>();

                for (int i = 1; i <= numberOfColumns; i++) {
                    newRow.add(rs.getObject(i));
                }

                rows.add(newRow);
            }
            return rows;
        } catch (Exception e) {
            e.printStackTrace();

            return null;
        }
    }