JavaGuide is a practical Java and backend interview-preparation resource. It includes an AI interview-assistant platform and RAG knowledge-base project built with Spring Boot 4.0, Java 21, and Spring AI 2.0, plus interview materials on Java, backend system design, and scenario-based questions. The project also provides a structured backend interview preparation plan and asks users who find the content useful to support it with a GitHub star.

The project has also open-sourced material for backend developers on AI application development, AI-assisted programming, and interviews, covering technologies such as LLMs, agents, RAG, MCP, Claude Code, and Codex.