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Part 1: What Really Happens When You Call SpringApplication.run()

1.1. The main() Entry Point — Anatomy of the Startup Every Spring Boot application starts the same way: @SpringBootApplication public class MyApplication { public static void main ( String [] args ) {…

  • SpringApplication instance starts life cycle by obtaining run listeners
  • getRunListeners() method initializes listeners with command-line args
  • starting() method of each listener called for pre-application tasks

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