BackupApp

import java.nio.file.*;
import java.util.Calendar;
import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

public class Main {
    static long BACKUP_PERIOD = 1000 * 60 * 5;

    private static FileData parseFullFilename(Path path) {
        String s = path.getFileName().toString();
        int dot = s.lastIndexOf('.');

        FileData data = new FileData();
        data.name = s.substring(0, dot);
        data.extension = s.substring(dot+1);

        return data;
    }

    public static void main(String[] args) throws java.io.IOException {
        System.out.println("Hello World!");

        Path path;
        if (args.length > 0) {
            path = Paths.get(args[0]);
            if (!Files.exists(path)) {
                System.out.println("File not " + path.toAbsolutePath().toString() + " exists");
                return;
            }
        } else {
            System.out.println("Expected file path");
            return;
        }

        Path fullFilename = path.getFileName();
        FileData fileData = parseFullFilename(fullFilename);

        System.out.println(path.normalize().toString());

        Path directory = Paths.get(path.getParent().toString(), fullFilename.toString() + "_backup/");
        if (!Files.exists(directory)) {
            Files.createDirectory(directory);
        }

        Timer timer = new Timer();
        BackupTimerTask task = new BackupTimerTask();
        task.setFileInfo(fileData);

        timer.schedule(task, 0, BACKUP_PERIOD);
    }

}

class FileData {
    String name;
    String extension;
}

class BackupTimerTask extends TimerTask {
    private long counter = 0;

    private FileData fileData;

    private static String getFileNamePostfix() {
        Date date = new Date();
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(date);

        StringBuilder result = new StringBuilder();
        result.append(calendar.get(Calendar.YEAR));
        result.append(calendar.get(Calendar.MONTH));
        result.append(calendar.get(Calendar.DAY_OF_MONTH));
        result.append(calendar.get(Calendar.HOUR_OF_DAY));
        result.append(calendar.get(Calendar.MINUTE));
        result.append(calendar.get(Calendar.SECOND));

        return result.toString();
    }

    void setFileInfo(FileData data) {
        fileData = data;
    }

    @Override
    public void run() {
        System.out.println(fileData.name);
        System.out.println(fileData.extension);
        System.out.println(getFileNamePostfix());
    }
}