public class Application implements RequestHandler<Object, Boolean> {
    private Logger logger = Logger.getLogger(Application.class);
    public Boolean handleRequest(Object object, Context context) {
        try {
            Class.forName("com.mysql.jdbc.Driver");
            logger.info("Calling DriverManager.getConnection()");
            Connection con = DriverManager.getConnection(
                    "jdbc:mysql://...endpoint...defaultdb",
                    "awsops",
                    "..."
            );
            Statement stmt = con.createStatement();
            logger.info("Test Started!");
            ResultSet result = stmt.executeQuery("SELECTn" +
                    "  last_name, COUNT(*)n" +
                    "FROMn" +
                    "  usersn" +
                    "GROUP BYn" +
                    "  last_namen" +
                    "HAVING COUNT(*) > 1");
            if (result.next()) {
                logger.info(result.getString("last_name"));
            }
            return true;
        } catch (Exception e) {
            logger.info(e.getLocalizedMessage());
        }
        return false;
    }

}