INTELLIGENT WORK FORUMS
FOR COMPUTER PROFESSIONALS

Log In

Come Join Us!

Are you a
Computer / IT professional?
Join Tek-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!

*Tek-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Jobs

Reading a C extract from Java

Reading a C extract from Java

(OP)
Hi,

I am trying to write some utlity program, where I need to read a extract file from JAVA program. Extract is mainly written by C or COBOL process.

In Java, I already manage to get the information about the C or COBOL structure which is used to write the extract, like

Field (int, float, double, long chat etc)
Starting position
Storage (e.g, int will take 4 bytes. float will take 8 bytes etc).

Now I need some guidence, what should I use to read first 4 bytes and convert it into int. and same for other type too.

Thanks,
Amar

RE: Reading a C extract from Java

You mean read from a file? What did you try so far?

Cheers,
Dian

RE: Reading a C extract from Java

Oooh this can be tricky. Let's assume the files were written on the same machine type as they're being read on, so there's no Endian problem.

Have a look at java.io.DataInput. It should do what you want.

RE: Reading a C extract from Java

Are you writing the data yourself? Write it in a simple, human-readable way, if possible.

For a repetitive structure use CSV, for changing structures use XML.

Binary data is hard to debug.  

don't visit my homepage: http://home.arcor.de/hirnstrom/minis/index.html

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Tek-Tips Forums free from inappropriate posts.
The Tek-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Tek-Tips forums is a member-only feature.

Click Here to join Tek-Tips and talk with other members!

Resources

Close Box

Join Tek-Tips® Today!

Join your peers on the Internet's largest technical computer professional community.
It's easy to join and it's free.

Here's Why Members Love Tek-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close