Dukehoff MCP for Java

Gives GitHub Copilot (and every agent in VS Code that uses MCP) semantic access to your Java code: the compiler's index and the refactoring engine of Apache NetBeans, through the Apache NetBeans Language Server extension, which is installed with it.

Your agent can then:

• find usages and implementations exactly (overloads, overrides and same-named methods told apart),
• refactor in one step: rename, change a method's signature, move a class, safe delete, inline, with every implementation and caller updated and a compile check afterwards,
• list compile errors without running a build,
• search and replace by Java structure, and stop in a test under the debugger.

Use

Install the extension and open a Maven, Gradle or Ant project. The tools appear in Copilot's agent mode under the server Java; VS Code asks once before starting it. Indexing a new project takes a moment; the tools wait for it.

Requirements: a JDK 17 or newer (the one the NetBeans extension uses, setting netbeans.jdkhome, or JAVA_HOME), and NetBeans' Java support enabled (netbeans.javaSupport.enabled, the default).

Outside VS Code (Copilot CLI, Claude Code, Codex, Cursor) use the standalone server from the releases.

License

Apache License 2.0. Dukehoff MCP for Java is not part of, nor endorsed by, the Apache NetBeans project. Source: https://github.com/dukehoff-gmbh/dukehoff-mcp