Java By Comparison

Always Close Multiple Resources

class Logbook {

    static final Path LOG_FOLDER = Paths.get("/var/log");
    static final Path STATISTICS_CSV = LOG_FOLDER.resolve("stats.csv");
    static final String FILE_FILTER = "*.log";

    void createStatistics() throws IOException {
        DirectoryStream<Path> directoryStream =
                Files.newDirectoryStream(LOG_FOLDER, FILE_FILTER);
        BufferedWriter writer =
                Files.newBufferedWriter(STATISTICS_CSV);

        try {
            for (Path logFile : directoryStream) {
                final String csvLine = String.format("%s,%d,%s",
                        logFile,
                        Files.size(logFile),
                        Files.getLastModifiedTime(logFile));
                writer.write(csvLine);
                writer.newLine();
            }
        } finally {
            directoryStream.close();
            writer.close();