What is Spring Framework? — Spring Technical Interview Questions & Answers

A lightweight, modular Java application framework.

What is Spring Framework?

  • Spring Framework is a popular Java toolkit for building apps with less tight coupling.
  • Inversion of Control — Spring creates and wires objects.
  • Modules cover core, web, data, and testing needs.
  • Spring Boot sits on this foundation.
  • Spring = DI container + ecosystem modules.

Technical Interview Tip: Define Spring via IoC/DI first.

Code Examples for What is Spring Framework?

What is Spring Framework? — working example

// Topic: What is Spring Framework?
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
class TopicController {
  @GetMapping("/api/topic")
  String topic() {
    return "Spring Boot: What is Spring Framework?";
  }
}

What is Spring Framework?: GET /api/topic returns this title string.

How to Explain What is Spring Framework? to an Interviewer

What is Framework (spring intro)?

Used for a tiny REST app localhost:8080 Not just the heading

Give one small example of Framework (spring intro).

@SpringBootApplication + one controller A lightweight, modular Java application framework

What mistake do beginners make with Framework (spring intro)?

calling Boot ‘just Spring XML’ Show the fix

Where do you use Framework (spring intro)?

localhost:8080 a tiny REST app