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Add Java MCP Server Development collection (#329)
* Add Java MCP Server Development collection - Add Java MCP server best practices instruction - Add Java MCP server project generator prompt - Add Java MCP expert chat mode - Add Java MCP development collection manifest - Update category READMEs Features: - Server setup with official MCP Java SDK - Tool/resource/prompt handlers with reactive streams - Project Reactor for async processing - Spring Boot integration with starters - Stdio and HTTP transport support - JSON schema construction with fluent builders - Synchronous facade for blocking use cases - Maven and Gradle build configurations * Fix Java MCP generator prompt - Add missing import statements for handler classes - Add handler registration in test server setup --------- Co-authored-by: Aaron Powell <[email protected]>
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‎README.chatmodes.md‎

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| [High-Level Big Picture Architect (HLBPA)](chatmodes/hlbpa.chatmode.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fhlbpa.chatmode.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode-insiders%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fhlbpa.chatmode.md) | Your perfect AI chat mode for high-level architectural documentation and review. Perfect for targeted updates after a story or researching that legacy system when nobody remembers what it's supposed to be doing. |
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| [Idea Generator mode instructions](chatmodes/simple-app-idea-generator.chatmode.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fsimple-app-idea-generator.chatmode.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode-insiders%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fsimple-app-idea-generator.chatmode.md) | Brainstorm and develop new application ideas through fun, interactive questioning until ready for specification creation. |
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| [Implementation Plan Generation Mode](chatmodes/implementation-plan.chatmode.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fimplementation-plan.chatmode.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode-insiders%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fimplementation-plan.chatmode.md) | Generate an implementation plan for new features or refactoring existing code. |
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| [Java MCP Expert](chatmodes/java-mcp-expert.chatmode.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fjava-mcp-expert.chatmode.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode-insiders%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fjava-mcp-expert.chatmode.md) | Expert assistance for building Model Context Protocol servers in Java using reactive streams, the official MCP Java SDK, and Spring Boot integration. |
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| [Kotlin MCP Server Development Expert](chatmodes/kotlin-mcp-expert.chatmode.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fkotlin-mcp-expert.chatmode.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode-insiders%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fkotlin-mcp-expert.chatmode.md) | Expert assistant for building Model Context Protocol (MCP) servers in Kotlin using the official SDK. |
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| [Kusto Assistant: Azure Data Explorer (Kusto) Engineering Assistant](chatmodes/kusto-assistant.chatmode.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fkusto-assistant.chatmode.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode-insiders%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fkusto-assistant.chatmode.md) | Expert KQL assistant for live Azure Data Explorer analysis via Azure MCP server |
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| [Mentor mode instructions](chatmodes/mentor.chatmode.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fmentor.chatmode.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/chatmode?url=vscode-insiders%3Achat-mode%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Fchatmodes%2Fmentor.chatmode.md) | Help mentor the engineer by providing guidance and support. |

‎README.collections.md‎

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| [Frontend Web Development](collections/frontend-web-dev.md) | Essential prompts, instructions, and chat modes for modern frontend web development including React, Angular, Vue, TypeScript, and CSS frameworks. | 11 items | frontend, web, react, typescript, javascript, css, html, angular, vue |
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| [Go MCP Server Development](collections/go-mcp-development.md) | Complete toolkit for building Model Context Protocol (MCP) servers in Go using the official github.com/modelcontextprotocol/go-sdk. Includes instructions for best practices, a prompt for generating servers, and an expert chat mode for guidance. | 3 items | go, golang, mcp, model-context-protocol, server-development, sdk |
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| [Java Development](collections/java-development.md) | Comprehensive collection of prompts and instructions for Java development including Spring Boot, Quarkus, testing, documentation, and best practices. | 12 items | java, springboot, quarkus, jpa, junit, javadoc |
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| [Java MCP Server Development](collections/java-mcp-development.md) | 'Complete toolkit for building Model Context Protocol servers in Java using the official MCP Java SDK with reactive streams and Spring Boot integration.' | 3 items | java, mcp, model-context-protocol, server-development, sdk, reactive-streams, spring-boot, reactor |
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| [Kotlin MCP Server Development](collections/kotlin-mcp-development.md) | Complete toolkit for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. Includes instructions for best practices, a prompt for generating servers, and an expert chat mode for guidance. | 3 items | kotlin, mcp, model-context-protocol, kotlin-multiplatform, server-development, ktor |
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| [Power Apps Code Apps Development](collections/power-apps-code-apps.md) | Complete toolkit for Power Apps Code Apps development including project scaffolding, development standards, and expert guidance for building code-first applications with Power Platform integration. | 3 items | power-apps, power-platform, typescript, react, code-apps, dataverse, connectors |
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| [Power BI Development](collections/power-bi-development.md) | Comprehensive Power BI development resources including data modeling, DAX optimization, performance tuning, visualization design, security best practices, and DevOps/ALM guidance for building enterprise-grade Power BI solutions. | 14 items | power-bi, dax, data-modeling, performance, visualization, security, devops, business-intelligence |

‎README.instructions.md‎

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| [Java 17 to Java 21 Upgrade Guide](instructions/java-17-to-java-21-upgrade.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-17-to-java-21-upgrade.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-17-to-java-21-upgrade.instructions.md) | Comprehensive best practices for adopting new Java 21 features since the release of Java 17. |
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| [Java 21 to Java 25 Upgrade Guide](instructions/java-21-to-java-25-upgrade.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-21-to-java-25-upgrade.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-21-to-java-25-upgrade.instructions.md) | Comprehensive best practices for adopting new Java 25 features since the release of Java 21. |
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| [Java Development](instructions/java.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava.instructions.md) | Guidelines for building Java base applications |
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| [Java MCP Server Development Guidelines](instructions/java-mcp-server.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-mcp-server.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjava-mcp-server.instructions.md) | Best practices and patterns for building Model Context Protocol (MCP) servers in Java using the official MCP Java SDK with reactive streams and Spring integration. |
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| [Joyride User Scripts Project Assistant](instructions/joyride-user-project.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjoyride-user-project.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjoyride-user-project.instructions.md) | Expert assistance for Joyride User Script projects - REPL-driven ClojureScript and user space automation of VS Code |
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| [Joyride Workspace Automation Assistant](instructions/joyride-workspace-automation.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjoyride-workspace-automation.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fjoyride-workspace-automation.instructions.md) | Expert assistance for Joyride Workspace automation - REPL-driven and user space ClojureScript automation within specific VS Code workspaces |
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| [Kotlin MCP Server Development Guidelines](instructions/kotlin-mcp-server.instructions.md)<br />[![Install in VS Code](https://img.shields.io/badge/VS_Code-Install-0098FF?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fkotlin-mcp-server.instructions.md)<br />[![Install in VS Code Insiders](https://img.shields.io/badge/VS_Code_Insiders-Install-24bfa5?style=flat-square&logo=visualstudiocode&logoColor=white)](https://aka.ms/awesome-copilot/install/instructions?url=vscode-insiders%3Achat-instructions%2Finstall%3Furl%3Dhttps%3A%2F%2Fraw.githubusercontent.com%2Fgithub%2Fawesome-copilot%2Fmain%2Finstructions%2Fkotlin-mcp-server.instructions.md) | Best practices and patterns for building Model Context Protocol (MCP) servers in Kotlin using the official io.modelcontextprotocol:kotlin-sdk library. |

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