ImageIO - get image type and exif data

Question

Given some source file (or more generic - input stream), I need to find out

• is it an image
• if it is an image, then retrieve its type (png/jpeg/gif/etc

Answer 1

It's an old thread, but I was doing this recently and found the Apache Tika library useful. Particularly for analysing generic streams to detect what content is in them.

Thought it might help others.

http://tika.apache.org/