package com.howtodoinjava.io;

import java.io.File;

import java.io.IOException;

import java.nio.file.Files;

import org.apache.commons.io.FileUtils;

public class FileSize {

public static void main(final String[] args) throws IOException {

File file = new File("c:/temp/demo.txt");

//1

long bytes = Files.size(file.toPath());

System.out.println(String.format("%,d Bytes", bytes));

System.out.println(String.format("%,d KB", bytes / 1024));

//2

bytes = file.length();

System.out.println(String.format("%,d Bytes", bytes));

//3

bytes = FileUtils.sizeOf(file);

System.out.println(String.format("%,d Bytes", bytes));

String displaySize = FileUtils.byteCountToDisplaySize(bytes);

System.out.println(displaySize);

System.out.println(FileUtils.byteCountToDisplaySize(2333444l)); //2 MB

System.out.println(FileUtils.byteCountToDisplaySize(2333444555l)); //2 GB

}

}