Get all files modified in last 7 days in a directory in Java

Question

I want to get the files which are modified in last 7 days using Java. Once I get the files I need it for other file operations.

Right now I am able to get all files from the directory and perform my file operations. Please suggest me how to get the files which are modified in last 7 days.

Below is the code which I used to get the files from the directory and do the file operations.

String target_dir = "D:/Reports/Project";
        File dir = new File(target_dir);
        File[] files = dir.listFiles();
        int count = 0;
        for (File f : files) {
            if(f.isFile()) {
                BufferedReader inputStream = null;
                FileReader in = null;
                try {
                    // Working Code
                    }catch (Exception e) {                   
                    System.out.println("Error while retreiving files ");                  
                }
                finally {
                    if (inputStream != null) {
                        inputStream.close();
                    }
                }
              }

Please suggest. Thanks in Advance.

score 5 · Answer 1 · answered Mar 17 '16 at 14:52

public static void main(String[] args) throws IOException {
    String dir = "myDirectory";

    // cutoff date:
    Instant lastWeek = Instant.now().minus(7, ChronoUnit.DAYS);

    // find with filter
    Files.find(Paths.get(dir), Integer.MAX_VALUE,
        (p, a) -> {
            try {
                return Files.isRegularFile(p)
                    && Files.getLastModifiedTime(p).toInstant().isAfter(lastWeek);
            }
            catch(IOException e) {
                throw new RuntimeException(e);
            }
        })
        .forEach(System.out::println);
}

score 2 · Answer 2 · answered Mar 17 '16 at 14:00

2

Take a look at the function File.lastModified and the functions in Date to check if it's in the last 7 days.

answered Mar 17 '16 at 14:00

cd1

15,908
12
46
47

Vishal Gajera · Answer 3 · 2016-03-18T05:47:59.007

you can try this, this will definitely help you,

your imports will be this only,

import java.io.File;
import java.util.Calendar;
import java.util.Date;
import java.util.concurrent.TimeUnit;

.......

public static void main(String[] args) {
    File f = new File("your-working-directory-path");

    Calendar calendar = Calendar.getInstance();
    calendar.add(Calendar.DAY_OF_MONTH, -7);

    Date lastDate = calendar.getTime();

    System.out.println(lastDate);

    for(String file : f.list()){

        String filePath = f.getAbsolutePath() + File.separator + file;;

        File f1 = new File(filePath);

        long diffInDays = getDateDiff(lastDate,new Date(f1.lastModified()),TimeUnit.DAYS);

        if(Math.abs(diffInDays) <= 7){
            // do your stuff here...
        }
    }

}

public static long getDateDiff(Date date1, Date date2, TimeUnit timeUnit) {
    long diffInMillies = date2.getTime() - date1.getTime();
    return timeUnit.convert(diffInMillies,TimeUnit.MILLISECONDS);
}

Replacing f1.lastModified() to f.lastModified()) worked for me. — Krishna, Mar 18 '16 at 05:35
@KrishnaD see code it should be f1.last... not f.last... also see i update -7 instead of -5, now can you check whether works for you or not ? — Vishal Gajera, Mar 18 '16 at 05:49
f1.last... is not working for me. Instead f.last... is working fine. — Krishna, Mar 21 '16 at 12:31

Dmitry · Answer 4 · 2018-09-28T19:07:54.830

1

Give FileFilter a try.

    long weekAgo = System.currentTimeMillis() - TimeUnit.DAYS.toMillis(7);

    File directory = new File(target_dir);
    File[] files = directory.listFiles(pathname -> pathname.lastModified() >= weekAgo);

    for (File file : files) {
        // Your code
    }

edited Sep 28 '18 at 19:07

answered Mar 17 '16 at 14:45

Dmitry

121
4

score 0 · Answer 5 · answered Mar 17 '16 at 13:59

0

Use the lastModified() method of the File class. This will return you the last modification timestamp of that file and then you check whether this is within the last 7 days or not.

answered Mar 17 '16 at 13:59

Arka Ghosh

845
1
11
23

Get all files modified in last 7 days in a directory in Java

5 Answers5