Getting the modification date and time of file or folder in Java

Introduction
In this section, you will learn how to get the last modification date and time of any file or a folder.
The file name or the directory name is taken by the user to get the last modification date and time of the specified file or a folder. This program checks whether the specified file or the folder exists or not.
If the file or the folder exists then the method lastModified( ) gives you the last modification date and time of the specified file or folder name. This method shows the time in millisecond.
The getName( ) method retrieves the name of the file or directory.
Here is the code of the program : 

<pre><span style=' color: Blue;'>import</span> java.io.*;
 
<span style=' color: Blue;'>import</span> java.util.*;
 
<span style=' color: Blue;'>public</span> <span style=' color: Blue;'>class</span> GetDirectoryAndFileModifiedTime{
 
  <span style=' color: Blue;'>public</span> <span style=' color: Blue;'>static</span> <span style=' color: Blue;'>void</span> main(String[] args) <span style=' color: Blue;'>throws</span> IOException{
    BufferedReader in = <span style=' color: Blue;'>new</span> BufferedReader(<span style=' color: Blue;'>new</span> 
                          InputStreamReader(System.in));
    System.out.println("Enter file or directory name in proper 
                        format to get the modification date and time : ");
    File filename = <span style=' color: Blue;'>new</span> File(in.readLine());
 
    <span style=' color: Blue;'>if</span> (filename.isDirectory()){
 
      <span style=' color: Blue;'>if</span> (filename.exists()){
 
       <span style=' color: Blue;'>long</span> t = filename.lastModified();
 
       System.out.println(<span style=' color: Maroon;'>"Directory name : "</span> + filename.getName());
        System.out.println("Directory 
                modification date and time : " + <span style=' color: Blue;'>new</span> Date(t)); 
     }
   
   <span style=' color: Blue;'>else</span>{
    
    System.out.println(<span style=' color: Maroon;'>"Directory not found!"</span>);
 
        System.exit(<span style=' color: Maroon;'>0</span>);
    
  }
   
 }
  
  <span style=' color: Blue;'>else</span>{
 
      <span style=' color: Blue;'>if</span> (filename.exists()){
 
       <span style=' color: Blue;'>long</span> t = filename.lastModified();
  
      System.out.println(<span style=' color: Maroon;'>"File name : "</span> + filename.getName());
        System.out.println("File 
                    modification date and time : " + <span style=' color: Blue;'>new</span> Date(t));
 
     }
  <span style=' color: Blue;'>else</span>{
    
    System.out.println(<span style=' color: Maroon;'>"File not found!"</span>);
 
       System.exit(<span style=' color: Maroon;'>0</span>);
   
   }
   
 }
  
}
 
}</pre>

Output of the Program:

C:\nisha>java GetDirectoryAndFileModifiedTime Enter file or directory name in proper format to get the modification date and time : myfile.txt File name : myfile.txt File modification date and time : Thu Oct 04 16:31:39 GMT+05:30 2007 C:\nisha>

Download this example.