I have been doing and teaching Java for 20 years at companies such as eBay, Google, and Guidewire Software. I have trained hundreds of students in Java, as well as consulted and solved problems at a variety of Fortune 500 companies.
I am also working with Docker and Kubernetes for the development, testing, and deployment of service-based applications.
I am able to quickly come up to speed on your problem or question and offer a variety of solutions or ideas.