getPlayerData.java

public static CompletableFuture<Integer> getPlayerData(final File dataFolder, final String searchName, final ExecutorService service, final ExceptionHandler handler) {
        final CompletableFuture<Integer> completableFuture = new CompletableFuture<>();
        service.submit(() -> {
            try (final Connection connection = getDatabaseConnection(dataFolder)) {
                final String SQL = "SELECT flags FROM safechat_data WHERE username = " + searchName + ";";
                try (final PreparedStatement preparedStatement = connection.prepareStatement(SQL)) {
                    preparedStatement.setString(1, searchName);
                    try (final ResultSet resultSet = preparedStatement.executeQuery()) {
                        final int flag = resultSet.getInt("flags");
                        completableFuture.complete(flag);
                    }
                }
            } catch (final SQLException e) {
                handler.handle(e);
            }
        });
        return completableFuture;
    }