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.

Java program that prints disk space information 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.

public long getTotalSpace() - Print total space.
public long getFreeSpace() - Print free space.
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(); } } } }

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()

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

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