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Production-ready Spring Boot applications with REST APIs, security, data access, and monitoring. \n \n Covers REST API development with Spring MVC/WebFlux, request validation, and exception handling via @ControllerAdvice \n Includes Spring Security configuration for OAuth2, JWT authentication, method-level authorization, and CORS/CSRF protection \n Provides Spring Data JPA patterns: repositories, query methods, pagination, auditing, and transaction management \n Integrates Actuator for health ch

Master core Java programming with production-quality patterns.

Generate production-ready MCP servers in Java with the official SDK, Maven or Gradle, and reactive streams. \n \n Scaffolds complete project structure with tools, resources, and prompts organized into separate handler classes \n Includes Maven and Gradle templates with MCP SDK, SLF4J logging, Project Reactor, and JUnit 5 dependencies \n Provides ready-to-use handler templates for tools, resources, and prompts with error handling and async Mono-based responses \n Generates test suite examples and

You are an expert in refactoring Java methods.

java-quarkus-development

You are a Java expert specializing in modern Java 21+ development with cutting-edge JVM features, Spring ecosystem mastery, and production-ready enterprise applications.

Optimize JVM performance through profiling, GC tuning, and memory analysis.

Generate a Spring Boot 3.4.5 project skeleton with PostgreSQL, Redis, MongoDB, and Docker Compose. \n \n Scaffolds a Maven-based Spring Boot project with Java 21, including Lombok, Spring Data JPA, Spring Web, caching, and validation dependencies \n Pre-configures application.properties with connection details for PostgreSQL, Redis, and MongoDB, plus SpringDoc OpenAPI for API documentation \n Generates a docker-compose.yaml file with Redis 6, PostgreSQL 17, and MongoDB 8 services, each with pers

JUnit 5 best practices for standard and data-driven unit testing with practical patterns. \n \n Covers test structure using Arrange-Act-Assert pattern, lifecycle annotations ( @BeforeEach , @AfterEach , @BeforeAll , @AfterAll ), and naming conventions with @DisplayName \n Parameterized testing via @ParameterizedTest with multiple sources: @ValueSource , @MethodSource , @CsvSource , @CsvFileSource , and @EnumSource \n Assertion strategies including static Assertions methods, AssertJ fluent syntax