Get folder size

Question

Do you know how can I get the folder size in Java?

The length() method in the File class only works for files, using that method I always get a size of 0.

Answer 1

import java.io.File;
import org.apache.commons.io.FileUtils;

public class FolderSize
{
  public static void main(String[] args)
   {
    long size = FileUtils.sizeOfDirectory(new File("C:/Windows/folder"));

    System.out.println("Folder Size: " + size + " bytes");
   }
}