How to calculate Free Disk Space in Java?

Calculate Free Disk Space using Apache Commons IO jar

Jar required: Apache Commons IO

Download the jar: https://commons.apache.org/proper/commons-io/download_io.cgi

Class used: org.apache.commons.io.FileSystemUtils.

Sometimes we need to check the free disk size before copying some data from one location to another.

package com.java.tricks;

import java.io.IOException;

import org.apache.commons.io.FileSystemUtils;

public class CalDiskSpace {

      public static void main(String[] args) {

         try {

            // calculate free disk space in kilo-bytes - windows

            double freeDskSpace = FileSystemUtils.freeSpaceKb("C:");

            // FileSystemUtils.freeSpaceKb("/volume");  // unix

            double freeDskInGb = freeDskSpace / (1024 * 1024);

            System.out.println("Free Disk Space (Gb):" + freeDskInGb);

         } catch (IOException e) {

            e.printStackTrace();

         }

      }

}

Output:

Free Disk Space (Gb):359.8280334472656