The developers find it easy to learn new technologies by looking at the examples source code provided with the technology.
I have provided some links below which provides link to the variety of the samples source code for Apache Camel.
Apache Camel is doing really well in the public sector projects because of the simplicity of it's technology, abundance of the technology books, very large open source community support and lastly it's commercial integration in Red Hat Fuse ESB product. The investment from Red Hat has really made a lot of difference for Apache Camel project's popularity in large scale public sector and private sector projects.
Happy playing with Apache Camel Examples and learning and mastering new technology.
Tejas Anil Bavishi