How to get file creation date of given file in Java?

Problem Description :

Write a program in Java that prints file creation date of given file.

Java program that prints file creation date of given file.

How to get file creation date of given file in Java?

Concept :

We need to use following method of BasicFileAttributes Interface that is present in java.nio.file.attribute.* package.

FileTime creationTime() - This method returns FileTime class reference. We need to convert this time into Date.

- How to create instance of BasicFileAttributes Interface?

File file=new File(filename);
Path path=file.toPath();
BasicFileAttributes attrs = Files.readAttributes(path, BasicFileAttributes.class);

Java Program :

package com.javamultiplex.filehandling; import java.io.File; import java.io.IOException; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.attribute.BasicFileAttributes; import java.nio.file.attribute.FileTime; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Scanner; /** * * @author Rohit Agarwal * @category File handling * @problem How to get file creation time in Java? * */ public class FileCreationDate { public static void main(String[] args) throws IOException { Scanner input = null; try { input = new Scanner(System.in); System.out.println("Enter file name with extension : "); String fileName = input.nextLine(); if (isValidFileName(fileName)) { File file = new File(fileName); if (file.exists()) { Path path = file.toPath(); BasicFileAttributes attributes = Files.readAttributes(path, BasicFileAttributes.class); // Getting file creation time. FileTime time = attributes.creationTime(); String dateTime = getStringFromFileTime(time); System.out.println("Creation date and time is : "+ dateTime); } else { System.out.println("File doesn't exist in current directory."); } } else { System.out.println("File name is not valid."); } } finally { if (input != null) { input.close(); } } } private static String getStringFromFileTime(FileTime time) { // Getting milliseconds. long milliseconds = time.toMillis(); Date date = new Date(); // setting milliseconds. date.setTime(milliseconds); SimpleDateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss a"); // Convert Date to String. String dateTime = dateFormat.format(date); return dateTime; } private static boolean isValidFileName(String fileName) { //Regular expression for validating file name. String pattern = "^.+\\..+$"; boolean result = false; if (fileName.matches(pattern)) { result = true; } return result; } }

Output :

Output - How to get file creation date of given file in Java?

References:

https://docs.oracle.com/javase/7/docs/api/java/nio/file/attribute/BasicFileAttributes.html

https://docs.oracle.com/javase/7/docs/api/java/nio/file/attribute/BasicFileAttributes.html#creationTime()

https://docs.oracle.com/javase/7/docs/api/java/nio/file/attribute/FileTime.html

https://docs.oracle.com/javase/7/docs/api/java/nio/file/Path.html

https://en.wikipedia.org/wiki/Regular_expression

https://docs.oracle.com/javase/7/docs/api/java/io/File.html

Thank you friends, I hope you have clearly understood the solution of this problem. If you have any doubt, suggestion or query please feel free to comment below. You can also discuss this solution in our forum.

Tags : File Handling, file creation time, if else, Scanner, String, File, Date, SimpleDateFormat(), exists(), Regular expression, Path, BasicFileAttributes, FileTime, creationTime(), java.io, java.nio.

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How to get file creation date of given file in Java?

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