How to get Total space, Free space and Usable space of given disk drive in Java?

Problem Description :

Write a program in Java that prints total space, free space and usable space of given disk drive.

How to get total, free and usable space in Java?

Concept :

For getting required information we need to use following methods of File class that is present in java.io.* package.

1. public long getTotalSpace() - Print total space.
2. public long getFreeSpace() - Print free space.
3. public long getUsableSpace() - Print usable space.

Java Program :

	package com.javamultiplex.filehandling;
	import java.io.File;
	import java.io.IOException;
	import java.util.InputMismatchException;
	import java.util.Scanner;
	/**
	* @author Rohit Agarwal
	* @category File Handling
	* @problem How to get disk space information in java?
	*/
	public class DiskSpace {
	public static void main(String[] args) throws IOException {
	Scanner input = null;
	try {
	input = new Scanner(System.in);
	System.out.println("Enter drive letter : ");
	char ch = input.next(".").charAt(0);
	File file = new File(ch + ":");
	// Finding total space.
	long totalSpace = file.getTotalSpace();
	// Finding free space.
	long freeSpace = file.getFreeSpace();
	// 1 KB = 1024 Byte, 1 MB = 1024 KB, 1 GB = 1024 MB, 1 TB = 1024 GB
	long totalSpaceInGB = totalSpace / (1024 * 1024 * 1024);
	long freeSpaceInGB = freeSpace / (1024 * 1024 * 1024);
	long usableSpaceInGB = totalSpaceInGB - freeSpaceInGB;
	System.out.println("Total Space : " + totalSpaceInGB + " GB");
	System.out.println("Free Space : " + freeSpaceInGB + " GB");
	System.out.println("Usable Space : " + usableSpaceInGB + " GB");
	} catch (InputMismatchException e) {
	System.out.println("Enter drive letter correctly!");
	} finally {
	if (input != null) {
	input.close();
	}
	}
	}
	}

view raw DiskSpace.java hosted with ❤ by GitHub

Output :

Output - How to get disk space information in Java?

References :

https://docs.oracle.com/javase/7/docs/api/java/io/File.html#getTotalSpace()

https://docs.oracle.com/javase/7/docs/api/java/io/File.html#getFreeSpace()

https://docs.oracle.com/javase/7/docs/api/java/io/File.html#getUsableSpace()

Thank you friends, I hope you have clearly understood the solution of this problem. If you have any doubt, suggestion or query please feel free to comment below. You can also discuss this solution in our forum.

Tags : File Handling, disk space information, if else, Scanner, File, getTotalSpace(), getFreeSpace(), getUsableSpace(), java.io

About Author:

I am simple guy with lot of ambitions. My main motive is to share whatever knowledge I have related to programming. With me you can easily learn how to solve any programming problem in Java.You can connect with me on social networking sites also.

Let's Get Connected: Linkedin | Facebook | Google Plus