Can I use Twig without Google AppEngine?

[Luan Nico]

Hello! I'd like to use Twig in a regular Java project, but I need the enum com.google.appengine.api.datastore.Query.FilterOperator to add a filter. I downloaded the Google AppEngine SDK, and add a lot of jars there, but it seems that none of them start with com., so I didn't know what to do. Is there a way to use this amazing library in a regular Java project, without AppEngine (whatever that is)? Or, if not, how do I import the entire library? I got about 20 jars in the download, do I have to add each one of them? Why wouldn't they make a single file?