Find Free Disk Space Using Java

java.io.File class provides following useful methods to figure out the free disk space available.

Following example showcases the use of above methods.

Example Final

import java.io.File;
import java.text.NumberFormat;

public class Tester {
   public static void main(String[] args) {

      NumberFormat numberFormat = NumberFormat.getInstance();
      numberFormat.setMaximumFractionDigits(2);
      File cDrive = new File("C:\");

      double freeSpace = cDrive.getFreeSpace();
      double usableSpace = cDrive.getUsableSpace();
      double totalSpace = cDrive.getTotalSpace();
      double oneGB = 1024 * 1024 * 1024;

      System.out.println("Free Space: " +
      numberFormat.format(freeSpace/oneGB) + " GB");
      System.out.println("Usable Space: " +
      numberFormat.format(usableSpace/oneGB) + " GB");
      System.out.println("Total Space: " +
      numberFormat.format(totalSpace/oneGB) + " GB");
   }
}

Output

Free Space: 11.66 GB
Usable Space: 11.66 GB
Total Space: 97.56 GB