private String getMessageFromDB() { String msg = null; try { DBUtil dbUtil = DBUtil.getInstance(); Connection conn = dbUtil.getConnection(); PreparedStatement stmt = conn.prepareStatement("select msg from hello"); ResultSet rs = stmt.executeQuery(); while (rs.next()) { msg = rs.getString("msg"); } } catch (Exception ex) { StringWriter sw = new StringWriter(); PrintWriter pw = new PrintWriter(sw); ex.printStackTrace(pw); msg = sw.toString(); } return msg; }