I didn't find the SimpleData class in the current Fuse MR trunk.
Can you show us the link of the document?
So We can fix it
What version of Camel are you using?
There was an issue in earlier Camel releases which didn't include those classes.
I believe it has been fixed from Camel 2.6 onwards.
I am using activemq 5.5.0-fuse-00-43, camel 2.7.1.fuse-00-43 and Apache ServiceMix 4.4.0.fuse-00-43.. The latest from fusesource.
P.S. Your Camel in Action book is awesome. Thanks....
Ah its a bug in the documentation.
Its a java.util.Date you should set.
I will create a ticket to have the documentation fixed.
PS: Glad the book is of use for you.