Write/modify EXIF data in existing JPEG files

A reusabe Java module (POJO, with sources) needed, which is able to read/write/modify EXIF data in existing JPEG files on server side.

Requirements:

1. Pure Java

2. NO third party/open source libraries

3. English documentation (Javadoc)

4. Server side (multithreaded access aware) component

5. IMPORTANT: JPEG files are quite big, so they shouldn't be loaded completely into the memory. Rather the component should read and write directly to/from streams

The EXIF block itself can be loaded and modified in memory.

NOTE, the project has a very sportly timeline.

Please, provide your fix price offer (whole project) to my mail.

EXIF binary format documentation enclosed.