File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
The moose likes Programmer Certification (SCJP/OCPJP) and the fly likes Binary Size of a text file Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login
JavaRanch » Java Forums » Certification » Programmer Certification (SCJP/OCPJP)
Bookmark "Binary Size of a text file" Watch "Binary Size of a text file" New topic

Binary Size of a text file

Susmita Tripathy

Joined: Oct 30, 2000
Posts: 9
I need to concatenate a number of text files into one file <CONCATENATE.TXT>. The files would be extracted back in a C++ code. As such in the header of <CONCATENATE.TXT> I will have to provide the size of each file I have put there. I need to be able to find the size of each file in binary. I would really appreciate any help on how to do this ,so that the file size can be used by C++ code to extract back individual files from the <CONCATENATE.TXT>.
Thanks a lot,
William Brogden
Author and all-around good cowpoke

Joined: Mar 22, 2000
Posts: 13037
Java uses the class for utility methods such as finding the length of a file.
When you create a File object in order to do the concatenation, use the length() method to get the file length - the value returned is a long, but you will probably be able to cast it to int without any problem. When writing the binary size, remember to look out for byte order problems. If your C++ program is on Windows, it will expect low byte first.
I agree. Here's the link:
subject: Binary Size of a text file
It's not a secret anymore!