Java tutorial is missing a referenced class file

Tutorial at https://thrift.apache.org/tutorial/java seems to be missing some info. It shows two classes, but refers to another, CalclulatorHandler, that's needed, but not on the page.

I found it at https://git1-us-west.apache.org/repos/asf?p=thrift.git;a=blob_plain;f=tutorial/java/src/CalculatorHandler.java;h=92944b07f8f67369fafa195f0fa19c516370ddbd;hb=HEAD based on the "source tree docs" link.

Also, note that the org.apache.thrift.* classes required aren't available in maven central, if I'm working on 0.10.0