problem in jmagick with transparency and rotation

[djmon84]

Hello!

First, sorry for my english!
I'm working with Imagemagick 6.2.9 and netbeans with jmagick.
I have a problem when i combine 2 images.
When the top image to combine has rotation, the background is white, instead of transparent!

this is the result:
http://www.foticos.com/foticos2/img/001.jpg

What should i do?

Thanks

[Bonzo]

I know nothing about jmagick but I would add a -background none if using it in my codes before the rotate command.

[snibgo]

JPEG doesn't support transparency. Try saving as a PNG instead.