Creating a file with preset size

Hi,
I would like to create an empty file with pre-set size/memory just to make sure that there is enough space available in the disk/memory. I also would like to know is there any to know the free space available in a given directory. I was looking at java.io.File class.
Thanks in advance
Ramesh

I would like to create an empty file with pre-set size/memoryIf it's size is not zero, then it isn't empty. To create a file that takes up N bytes, you could try creating a RandomAccessFile, then doraf.seek(N);
raf.write(0);but I don't know if this would work. If it doesn't, you would have to create a new file and write N bytes to it.
is there any to know the free space available in a given directoryThere is no such thing. And there is no way to use java.io.File to find the free space available on a drive.

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