Not sure if DPI is stored in EXIF (or even if you're only using JPGs), but if
so this page might help:
http://www.leavethatthingalone.com/blog/index.cfm/2006/5/16/Using-ColdFusion-to-Read-EXIF-Information-from-JPEGs
> I'm working on an application that needs to be able to find the Dpi of
> an image uploaded by a user.
>
> I'm trying to use an external Java Class to accomplish this but I keep
> getting an error.
>
> I added the path to where the .class is located in the "Java and JVM"
> Path in ColdFusion Administration and I have restarted the server.
>
> The class file name is ImageInfo.class.
>
> When I try to call the class [imageIn = CreateObject("java",
> "ImageInfo");] I get the error bellow.
>
> Object Instantiation Exception.
> An exception occurred when instantiating a java object. The cause of
> this exception was that: ImageInfo (wrong name:
> org/devlib/schmidt/imageinfo/ImageInfo).
>
> So I then tried to call the class using the name
> org/devlib/schmidt/imageinfo/ImageInfo, this time the error said that
> the class could not be found.
>
> Dose any one have any ideas on what I could be doing wrong.
>
> Thanks
>
> ----------------------
>
Heath
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