How to read to a file position using FileInputStream and alter a specific record.

Posted on 2003-12-12
Last Modified: 2008-03-06
I am using FileInputStream to find a position in a file and would like to edit a perticular record when all criteria is met. How do I change from a FileInputStream to a FileOutputStream without loosing my file pointer?
Question by:rayskelton
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
LVL 35

Accepted Solution

TimYates earned 125 total points
ID: 9927798
use a randomaccessfile instead...
LVL 15

Expert Comment

ID: 9927804
I don't think you can do this without reading from the input and writing to the output until you hit the record you want, then writing the new record and finally continuing reading/writing (ie. effectively copying the file).

If you want to jump in to the middle of a file and do editing, you should probably be using a RandomAccessFile.
LVL 15

Expert Comment

ID: 9927805
Hee hee ;-)
LVL 35

Expert Comment

ID: 9927809

Featured Post

Creating Instructional Tutorials  

For Any Use & On Any Platform

Contextual Guidance at the moment of need helps your employees/users adopt software o& achieve even the most complex tasks instantly. Boost knowledge retention, software adoption & employee engagement with easy solution.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
add projects t working set in maven 2 70
Problem to Alipay 10 95
Java syntax, or is it Selenium 6 61
Firefox and firebub 5 27
After being asked a question last year, I went into one of my moods where I did some research and code just for the fun and learning of it all.  Subsequently, from this journey, I put together this article on "Range Searching Using Visual Basic.NET …
In this post we will learn how to connect and configure Android Device (Smartphone etc.) with Android Studio. After that we will run a simple Hello World Program.
Video by: Michael
Viewers learn about how to reduce the potential repetitiveness of coding in main by developing methods to perform specific tasks for their program. Additionally, objects are introduced for the purpose of learning how to call methods in Java. Define …
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…

738 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question