Size of File

[Fisher Daniel]

Dear all,
How can I get the size of a folder ?
thanks
daniel

[Corey McGlone]

I'm not sure if this is exactly what you're looking for, but I was able to come up with the size of all the files within a directory by using a recursive function, like this:

public static void main(String[] args) 
{
    File f = new File("C:\\test");
    System.out.println(getTotalSize(f));
}
private static long getTotalSize(File directory) 
{
    File[] files = directory.listFiles();
    long totalSize = 0;
    for ( int i = 0; i < files.length; i++ )
    {
        if ( files[i].isDirectory() )
        {
            totalSize += getTotalSize(files[i]);
        }
        else
        {
            totalSize += files[i].length();
        }
    }
    return totalSize;
}

I'm not really sure if there is an easier way to do this or not, but it seems that simply calling the length method on a File object that represents a directory simply returns 0. Therefore, I had to look at each file individually and recurse through any subdirectories. The final result printed the size of all of the files contained within the directory C:\test in bytes.
I hope this helps you out.
Corey