This is an example of how to get the Disk free space in Java. We are using the org.apache.commons.io.FileSystemUtils class that provides static utility methods for general file system functions not provided via the JDK File class. Getting the free space of a Disk implies that you should:
- Use
freeSpaceKb(String path)that returns the free space on a drive or volume in kilobytes by invoking the command line. - Convert the KB to GB, by diving the result of KB with the
org.apache.commons.io.FileUtils.ONE_MB, that is the number of bytes in a megabyte.
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import org.apache.commons.io.FileSystemUtils;
import org.apache.commons.io.FileUtils;
import java.io.IOException;
public class GetFreeDiskSpace {
public static void main(String[] args) {
try {
// Set a string with the path
String path = "C:";
// Get free space in KB
long freeSpaceInKB = FileSystemUtils.freeSpaceKb(path);
// Calculate free space in GB
long freeSpaceInGB = freeSpaceInKB / FileUtils.ONE_MB;
// Print the result
System.out.println("Free space of " + path + " drive = " + freeSpaceInGB + " GB");
} catch (IOException e) {
e.printStackTrace();
}
}
}
Output:
Free space of C: drive = 40 GB
This was an example of how to get the Disk free space in Java.
