Java: getting the size of File Directory

    /**  

     * @author UkiDLucas 

     * @return size of file or directory in bytes [ use: long bytesToMb(long bytes) ]  

     **/

    public static long calcFileDirectorySize(File directory)

    {

if (directory.isFile())

    return directory.length();

long size = 0;

for (File file : directory.listFiles())

{

    size += calcFileDirectorySize(file);

}

return size;

    }

    public static double bytesToMb(long bytes)

    {

return (bytes / 1024 / 1024);

    }