Scaffolding Broken for quarkus-messaging-kafka

[myfear]

Describe the bug

When I scaffold the following project (with Java 25):

mvn io.quarkus:quarkus-maven-plugin:create \
  -DprojectGroupId=com.example \
  -DprojectArtifactId=review-workflow \
  -Dextensions="rest-jackson,messaging-kafka,quarkus-flow,quarkus-langchain4j-ollama"

The resulting artifacts show errors:
in src/main/java/com/example

• MyMessagingApplication.java (The type Message is not generic; it cannot be parameterized with arguments )

in src/main/test/java/com/example

• MyMessagingApplicationTest (The method toUpperCase(Message.of("bonjour")) is undefined for the type MyMessagingApplication)

Expected behavior

Code compiles.

Actual behavior

[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /Users/meisele/Projects/the-main-thread/review-workflow/src/main/java/com/example/MyMessagingApplication.java:[32,47] type com.example.Message does not take parameters
[ERROR] /Users/meisele/Projects/the-main-thread/review-workflow/src/main/java/com/example/MyMessagingApplication.java:[32,19] type com.example.Message does not take parameters
[INFO] 2 errors
[INFO] ----------

How to Reproduce?

See above. Scaffold project.

Output of uname -a or ver

Darwin Kernel Version 25.2.0: Tue Nov 18 21:09:56 PST 2025; root:xnu-12377.61.12~1/RELEASE_ARM64_T6041 arm64

Output of java -version

openjdk 25 2025-09-16 LTS OpenJDK Runtime Environment Temurin-25+36 (build 25+36-LTS)

Quarkus version or git rev

3.31.3

Build tool (ie. output of mvnw --version or gradlew --version)

Apache Maven 3.9.11 (3e54c93a704957b63ee3494413a2b544fd3d825b)

Additional information

No response

[quarkus-bot]

/cc @alesj (kafka), @cescoffier (kafka), @ozangunalp (kafka)

[ozangunalp]

Indeed, the star import in MyMessagingApplication doesn't work well with the type Message created by Flow quickstart.

I think we need to change both.

[gsmet]

Let's stay away from star imports please, they are too brittle.