How to get last modified file from a folder?

[Neversleepin]

Hi,

is it possible to get the list of last life added in a folder with java?
i don't want to get the lastmodified file which return a date or time.
i want to get the file name of last added in a folder.
Thank you all

[Ezzaral]

No, there isn't a build-in mechanism for that. You will need to get the list of files in the directory with list() or listFiles() and then check lastModified() on them to determine the most recent.

[Neversleepin]

OK, but here is a code that list the last modified files in a directory between two dates.
This is working well but is it possible to do the same thing between two times like
get the last modified file bet 02:00:00am and 01:00:00am (so the interval time is 23h)

Thanks

import java.io.*;
import java.text.*;
import java.util.*;

public class FileFilterDateIntervalUtils implements FilenameFilter {
    String dateStart;
    String dateEnd;
    SimpleDateFormat sdf;

    public FileFilterDateIntervalUtils(String dateStart, String dateEnd) {
        this.dateStart = dateStart;
        this.dateEnd = dateEnd;
        sdf = new SimpleDateFormat("yyyy-MM-dd");
    }

    public boolean accept(File dir, String name) {
        Date d = new Date(new File(dir, name).lastModified());
        String current = sdf.format(d);
        return ((dateStart.compareTo(current) < 0
                && (dateEnd.compareTo(current) >= 0)));
    }
}

then

import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;

public class FileSortDateInterval {
    public static void main(String[] args) {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        FileFilterDateIntervalUtils filter =
            new FileFilterDateIntervalUtils("2010-01-04", "2011-01-20");
        File folder =  new File("G:/Temp");
        File files[] = folder.listFiles(filter);
        for (File f : files) {
            System.out.println(f.getName() + " "
                    + sdf.format(new Date(f.lastModified())));
        }
    }
}

[Ezzaral]

You could use the Date object itself to determine those hour ranges instead of converting the dates to strings for the comparison.