At the moment, you can find two simple but complete examples within the NoSQL DB package itself. There is a hello world program, and well as a simple client application called SchemaExample that you can build and run gainst an Oracle NoSQL Database deployment. The SchemaExample can be a starting point to example exploration of the product.
See the Getting Started Guide at http://download.oracle.com/docs/cd/NOSQL/html/AdminGuide/smoketest.html for information on how to compile and run the hello world program. These directions can be extended to the SchemaExample application too.
We'll be adding more step by step compilation instructions for SchemaExample to the FAQ.