We've got good news for Java developers using the AdWords API to manage 
Shopping campaigns: the 
Java client library now has a set of utilities that greatly simplifies the process of setting up your product partition trees.
The utilities let you focus on your use case, avoid boilerplate code, make your code more readable, and reduce the amount of code needed for common actions.
For example, the updated 
AddProductPartitionTree code sample that uses the utility is 65% shorter than the previous version.
Intrigued? Check out the 
product partition utility guide on github, and let us know what you think!
If you would like to have a similar utility in a different client library, register your interest by opening a github issue on that library's issues page.
Learn more
If you haven't started using Shopping campaigns, the following resources are a great place to start:
Still have questions? Feel free to visit us on the 
AdWords API Forum or our 
Google+ page.
 - Josh Radcliff, AdWords API Team
 - Josh Radcliff, AdWords API Team