change the file format

[madhuri akhi]

hi
in my requirement is
am uploading the file through web that file will be stored adminstrator side ,at the time of uploding you can change the format.that changed file using by some other person or myself.
for example word file is stored that forther using like a pdf.
so i need code c,c++ or java
how to convert a file one format to another format using JNI java native interface?and with eclipse
so i need code about that one.
[ September 18, 2006: Message edited by: madhuri akhi ]

[Jesper de Jong]

You'll have to write a program that reads and interprets the file in the input format and that writes the data in the desired output format. Since you did not say anything about what kinds of files and what formats you want to convert, I can't give you a more useful answer.

JNI is a way to call native code (written in C, C++ or another programming language) from Java. You don't necessarily need JNI to convert files from one format to another.

It's hard to give you a useful answer and certainly impossible to give you source code because your question is too vague.