Ray java example not work for ray 2.5.1

[purejade]

How severe does this issue affect your experience of using Ray?

• High: It blocks me to complete my task.

ray java example， ray version is 2.5.1
java code
https://docs.ray.io/en/releases-2.5.1/serve/tutorials/java.html

run code
java -cp ray-java-example-1.0-SNAPSHOT.jar org.example.StartRayServe

error msg