java-tutorials/spring-boot/src/main/java/com/baeldung/displayallbeans/Application.java

package com.baeldung.displayallbeans;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ApplicationContext;

@SpringBootApplication
public class Application {
    private static ApplicationContext applicationContext;

    public static void main(String[] args) {
        applicationContext = SpringApplication.run(Application.class, args);

        displayAllBeans();
    }

    public static void displayAllBeans() {
        String[] allBeanNames = applicationContext.getBeanDefinitionNames();
        for (String beanName : allBeanNames) {
            System.out.println(beanName);
        }
    }
}