Get File size in java

Below snippets are used to return the file size in bytes, Kbs, Mbs and Gbs.

private static long fileSizeInBytes(String filePath) {
 long length = new File(filePath).length();
 return length;
}

private static double fileSizeInKb(String filePath) {
 double length = (double) new File(filePath).length();
 return length / 1024;
}

private static double fileSizeInMB(String filePath) {
 double length = (double) new File(filePath).length();
 return length / (1024 * 1024);
}

private static double fileSizeInGb(String filePath) {
 double length = (double) new File(filePath).length();
 return length / (1024 * 1024 * 1024);
}

Find the below working application.

App.java

package com.sample.app;

import java.io.File;

public class App {

 private static long fileSizeInBytes(String filePath) {
  long length = new File(filePath).length();
  return length;
 }

 private static double fileSizeInKb(String filePath) {
  double length = (double) new File(filePath).length();
  return length / 1024;
 }

 private static double fileSizeInMB(String filePath) {
  double length = (double) new File(filePath).length();
  return length / (1024 * 1024);
 }

 private static double fileSizeInGb(String filePath) {
  double length = (double) new File(filePath).length();
  return length / (1024 * 1024 * 1024);
 }

 public static void main(String[] args) {
  String filePath = "/Users/krishna/Documents/TechnicalDocuments/glob.txt";

  System.out.println("File size : " + fileSizeInBytes(filePath) + " bytes");
  System.out.println("File size : " + fileSizeInKb(filePath) + " Kb");
  System.out.println("File size : " + fileSizeInMB(filePath) + " Mb");
  System.out.println("File size : " + fileSizeInGb(filePath) + " Gb");

 }

}

Output

File size : 2872 bytes
File size : 2.8046875 Kb
File size : 0.00273895263671875 Mb
File size : 2.6747584342956543E-6 Gb

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