java.io.File is my favorite utility which deals with lots of File related to functionalities. I started dealing with Java and File utils more and more in my initial coding days. It’s always fun to perform number of different operations using java.io.File.
In Java, you can use the File.length() method to get the file size in bytes.
Example:
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package com.crunchify.tutorials; import java.io.File; /** * @author Crunchify.com */ public class CrunchifyFindFileFolderSize { public static void main(String[] args) { File file = new File("/Users/<username>/Documents/log.txt"); long size = 0; size = getFileFolderSize(file); double sizeMB = (double) size / 1024 / 1024; String s = " MB"; if (sizeMB < 1) { sizeMB = (double) size / 1024; s = " KB"; } System.out.println(file.getName() + " : " + sizeMB + s); } public static long getFileFolderSize(File dir) { long size = 0; if (dir.isDirectory()) { for (File file : dir.listFiles()) { if (file.isFile()) { size += file.length(); } else size += getFileFolderSize(file); } } else if (dir.isFile()) { size += dir.length(); } return size; } } |