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77+ curated questions with the same answer shape every time: quick recap, deep dive, pitfalls, and follow-ups. Coverage includes ioc and di basics, spring annotations, bean lifecycle basics, spring boot auto configuration, and more.
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Topics follow a teaching order. Each answer ends with a clear Next question control so you can move forward without hunting the list.
Spring Boot is the default backend framework for Java fullstack development, and freshers are expected to know it well enough to bootstrap a REST API on their first week. This module covers the dependency injection mental model (why it exists, what it solves), the Spring component stereotypes (@Component, @Service, @Repository, @Controller) and when to use each, Spring Boot's auto-configuration magic and how to override it, profiles for environment management, and Actuator for basic health monitoring. Every concept is anchored to a practical 'here's what you'd write in a real project' example.
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Topics are ordered for learning. Within each topic, rows are numbered 1–77 globally so you always know where you are. Collapse topics if you want a lighter view — use Expand all when you need the full list again.
Numbers 1–77 follow the order we recommend — click any row to open the full answer, or use the sticky Next link at the bottom of each page to go Q1 → Q77.