Error when Creating a ServiceClientFactory instance JAVA API

When invoking Assembling a PDF document  quick start I'm having a compilation error when creating a ServiceClientFactory instance:

//Create a ServiceClientFactory instance

ServiceClientFactory myFactory = ServiceClientFactory.createInstance(connectionProps);

The error is: The type com.adobe.idp.Context cannot be resolved. It is indirectly referenced from required .class files

All the required jars are a path.

What esle can be a problem ?

Thanks, Yan