Java runs Android, most of Wall Street, and half of enterprise software. This course covers the OOP fundamentals, Collections and Streams, Spring Boot APIs, JPA/Hibernate for databases, and the testing patterns that make Java code production-ready.
This is a text-first course that links out to the best supporting material on the internet instead of trying to replace it. The goal is to make this the best course on java and spring boot development you can find — even without producing a single minute of custom video.
This course is built by people who ship production java systems for a living. It reflects how things actually work on real projects — not how the documentation describes them.
Every day has working code snippets you can paste into your editor and run right now. The emphasis is on understanding what each line does, not memorizing syntax.
Instead of shooting videos that go stale in six months, Precision AI Academy links to the definitive open-source implementations, official documentation, and the best conference talks on the topic.
Each day is designed to finish in about an hour of focused reading plus hands-on work. You can do the whole course over a week of lunch breaks. No calendar commitment, no live classes, no quizzes.
Each day stands alone. Read them in order for the full picture, or jump straight to the day that answers the question you have today.
Classes, interfaces, abstract classes, generics, and the Java type system. The Object class, equals/hashCode contracts, and the patterns that prevent the most common Java bugs.
ArrayList, HashMap, HashSet, TreeMap — when to use each. Stream API for functional-style data processing: map, filter, reduce, and collectors.
Auto-configuration, @RestController, request mapping, Jackson JSON serialization, and the Spring Boot starters that replace 90% of boilerplate configuration.
Entity classes, repository interfaces, JPQL queries, lazy vs eager loading, and the transaction management that prevents stale reads and lost updates.
JUnit 5, Mockito, @SpringBootTest for integration tests, and building a fat JAR that deploys to any JVM. The test pyramid for Spring Boot applications.
Instead of shooting our own videos, Precision AI Academy links to the best deep-dives already on YouTube. Watch them alongside the course. All external, all free, all from builders who ship this stuff.
OOP fundamentals, Collections, Streams, and the Java ecosystem explained from scratch.
Building a complete REST API with Spring Boot, data validation, and JSON responses.
Entity mapping, CRUD repositories, JPQL, and the N+1 query problem in Spring Data JPA.
Unit tests, mock objects, and Spring Boot integration tests. The testing patterns used in enterprise Java.
The best way to understand any technology is to read the production-grade implementations that prove it works. These repositories implement patterns from every day of this course.
The framework behind Days 3-5. Reading the auto-configuration source explains why Spring Boot requires so little boilerplate.
The JPA implementation used in Day 4. The proxy and lazy loading source explains the most confusing Hibernate behaviors.
The mocking framework for Day 5. Clean source that shows how Java reflection enables mock generation.
Google’s Java utility library. Immutable collections, cache utilities, and functional programming helpers that complement the JDK.
Enterprise Java shops use Spring Boot. This course teaches the framework patterns you will encounter on day one.
You know Java or Kotlin. This course teaches Spring Boot — the server-side Java stack that powers most Android backends.
Java and Spring Boot are the most common stack in enterprise job postings. This course teaches what the job descriptions actually require.
The 2-day in-person Precision AI Academy bootcamp covers Java and Spring Boot development hands-on. 5 U.S. cities. $1,490. 40 seats max. June–October 2026 (Thu–Fri).
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