package com.devmanuals; import java.io.IOException; import org.apache.commons.io.FileSystemUtils; public class ReaddiskSpace { public static void main(String[] args) { try { //Passing disk name to calculate free disk space double freeDiskSpace = FileSystemUtils.freeSpaceKb("C:"); //Number into Gigabyte(GB) Convrsion double freeDiskSpaceGB = freeDiskSpace / 1024 / 1024; System.out.println("Free Disk Space :" + freeDiskSpaceGB+" GB"); } catch (IOException e) { e.printStackTrace(); System.out.println(e.getCause()); } } }