HN

Founder & Author

Har Narayan Vishwakarma

Java • Spring Boot • Grails • Groovy • AI educator. I write free, practical tutorials and books so B.Tech/BCA students and working developers can learn by building real projects.

harry44 WhatsApp info@groovygrails.in +91-8010843382

95

Tutorials

929

Lessons

11

Books

3

Quizzes

630

Interview Q&A

About me

I run GroovyGrails.in — a free Tutorial Hub for Java, Spring Boot, Grails, Groovy, Databases, DevOps and AI. Every tutorial is written from real project experience, not textbook theory.

I also publish free e-books (PDF + read-online), hands-on quizzes with certificates, 300+ interview questions, and ready-to-submit college projects with reports and source code.

For training, project help, or bulk content needs — call, WhatsApp, or mail me using the buttons above.

Java Spring Boot Grails / Groovy MySQL Docker / Jenkins AI / LLMs Software Testing

Work with me

  • Online training — Java, Spring Boot, Grails & QA batches for students and teams.
  • Projects — final-year builds with report, PPT and deployment help.
  • Consulting — code reviews, CI/CD setup and test automation.
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