File lastModified() method in Java with Examples

The lastModified() function is a part of File class in Java . This function returns the time denoted by the this abstract pathname was last modified.The function returns long value measured in milliseconds, representing the time the file was last modified else returns 0L if the file does not exists or if an exception occurs.

Function signature:

public long lastModified()

Syntax:



long valr = file.lastModified();

Parameters: This method does not accept any parameter.

Return TypeThis function returns long data type representing the time the file was last modified or 0L if the file does not exist.

Exception: This method throws Security Exception if the write access to the file is denied

Below programs illustrates the use of lastModified() function:

Example 1: The file “F:\\program.txt” is a existing file in F: Directory.

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// Java program to demonstrate
// lastModified() method of File Class
  
import java.io.*;
  
public class solution {
    public static void main(String args[])
    {
  
        // Get the file
        File f = new File("F:\\program.txt");
  
        // Get the last modified time of the file
        System.out.println("Last modified: "
                           + f.lastModified());
    }
}

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Output:

Last modified: 1542654265978

Example 2: The file “F:\\program1.txt” does not exist

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// Java program to demonstrate
// lastModified() method of File Class
  
import java.io.*;
  
public class solution {
    public static void main(String args[])
    {
  
        // Get the file
        File f = new File("F:\\program.txt");
  
        // Get the last modified time of the file
        System.out.println("Last modified: "
                           + f.lastModified());
    }
}

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Output:

Last modified: 0

Note: The programs might not run in an online IDE. Please use an offline IDE and set the path of the file.



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Second year Department of Information Technology Jadavpur University

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