Java MCP Server examples are incomplete and non-runnable

Bug description

The current documentation examples for the Java MCP Server are incomplete and non-functional. Dependencies referenced in the code snippets cannot be resolved, and critical components (e.g., main class, configuration, or entry point) are missing. There is no working “Hello World” example to verify basic setup and functionality, making it impossible for new users to get started.

Environment

Spring MCP version: 0.16.0 with webflux implementation
Java version: Java 11
Build tool: Maven
IDE: Eclipse

Steps to reproduce

Go to the official Spring MCP documentation (e.g., https://modelcontextprotocol.io/sdk/java/mcp-server).
Copy the provided code snippets with webflux stateless into a new Java project.
Attempt to compile or run the code.
Observe unresolved dependencies

Expected behavior

The documentation should provide a complete, minimal, and runnable Java example that:

Includes all necessary dependencies (with Maven/Gradle snippets).
Contains a working demo example.
Demonstrates a basic “Hello World” endpoint or service.
Can be copied, pasted, and run immediately without additional research or guessing.
Minimal Complete Reproducible example

https://modelcontextprotocol.io/sdk/java/mcp-server の Java MCP Server ドキュメントから始め、WebFlux stateless のスニペット、その Maven 依存関係、欠落している設定またはエントリーポイントを確認します。ドキュメントに、解決可能な依存関係と、追加の調査なしにコピー、コンパイル、実行できる十分なセットアップを備えた、完全な最小構成の Java 11 Hello World 例が含まれていれば完了です。