How to get file creation date in Java

By mkyong | Updated: July 23, 2020

Viewed: 9,244 (+62 pv/w)

Tags: file metadata io java java.io java.nio

In Java (@since 1.7), we can use the NIO Files.readAttributes to get all the file metadata, including the file creation date.

  Path file = Paths.get(fileName);

  BasicFileAttributes attr = Files.readAttributes(file, BasicFileAttributes.class);

  System.out.println("creationTime: " + attr.creationTime());
  // creationTime: 2020-07-20T09:29:54.627222Z

1. Files.readAttributes (NIO)

This example uses Files.readAttributes to print the file creation date.

package com.mkyong.io.howto;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.BasicFileAttributes;

public class GetCreationDate1 {

    public static void main(String[] args) {

        String fileName = "/home/mkyong/test.txt";

        try {

            Path file = Paths.get(fileName);

            BasicFileAttributes attr =
                Files.readAttributes(file, BasicFileAttributes.class);

            System.out.println("creationTime: " + attr.creationTime());

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

Output

creationTime: 2020-07-20T09:29:54.627222Z

P.S We also can use the same code to get the creation date of a directory.

2. Files.getAttribute (NIO)

The Files.readAttributes will return all the file metadata like creation time, last modified time, file size, etc.

We can use Files.getAttribute to return a speficied file metadata, for example, creationTime attribute.

package com.mkyong.io.howto;

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.nio.file.attribute.FileTime;

public class GetCreationDate2 {

    public static void main(String[] args) {

        String fileName = "/home/mkyong/test";

        try {

            Path file = Paths.get(fileName);

            FileTime creationTime =
                (FileTime) Files.getAttribute(file, "creationTime");

            System.out.println("creationTime: " + creationTime);

        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

3. Before Java 7

This example uses Runtime.getRuntime().exec to issue a dir file /tc system command to list the file creation date on Windows, and parse the content manually to extract the file creation date.

P.S Before Java 7, there is no official API to get the file creation date.

3.1 Review the dir /tc command on Windows.

C:\> dir c:\logfile.log /tc
 Volume in drive C has no label.
 Volume Serial Number is 0410-1EC3

 Directory of c:\

31/05/2010  08:05                14 logfile.log
               1 File(s)             14 bytes
               0 Dir(s)  35,389,460,480 bytes free


C:\> dir /?

Displays a list of files and subdirectories in a directory.

 //...
 /T          Controls which time field displayed or used for sorting
 timefield   C  Creation
             A  Last Access
             W  Last Written

3.2 Java example.

package com.mkyong.io.howto;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

public class GetFileCreation3 {

    public static void main(String[] args) {

        Process proc;
        BufferedReader br = null;

        try {

            proc = Runtime.getRuntime()
                  .exec("cmd /c dir c:\\logfile.log /tc");
                  
            br = new BufferedReader(
                  new InputStreamReader(proc.getInputStream()));

            String data = "";
            //it's quite stupid but work, ignore first 5 lines
            for (int i = 0; i < 6; i++) {
                data = br.readLine();
            }

            System.out.println("Extracted value : " + data);

            //split by space
            StringTokenizer st = new StringTokenizer(data);
            String date = st.nextToken(); //Get date
            String time = st.nextToken(); //Get time

            System.out.println("Creation Date  : " + date);
            System.out.println("Creation Time  : " + time);

        } catch (IOException e) {

            e.printStackTrace();

        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }
}

Output

Extracted value : 31/05/2010  08:05  14 logfile.log
Creation Date  : 31/05/2010
Creation Time  : 08:05

The above code is still working, but it is too complicated to get a file creation time unless you are unable to upgrade the JVM; otherwise, please use the Java 7+ NIO Files.readAttributes.

Download Source Code

References

• Oracle – File metadata
• BasicFileAttributes JavaDoc
• How to get file last modified date in Java