Calculate Directory Size - is there a smart way?

[icecuber]

I have to Calculate Directory Size, the trivial method is to open all subdirectory recursively and add the size of all the file the dir contains... this may be VERY LONG and DISK-INTENSIVE...

there's another way? or the trivial solution is the best??

thanks in advice?

 

[icecuber]

Inside the Commons IO - package org.apache.commons.io

i find the Class FileUtils
that has a method that implements the trivial solution :
sizeOfDirectory

public static long sizeOfDirectory(File directory)

Recursively count size of a directory (sum of the length of all files).

Parameters:
directory - directory to inspect
Returns:
size of directory in bytes, 0 if directory is security restricted


for now i'm going to use this

 

[Diancecht]

If you don't need it to be cross-platform you can perform an OS operation with System.exec().

Anyway, I think even the OS way to calculate that is recursively do it for every subdir.

Cheers,
Dian