Spring Autowiring in instances that are not managed Spring beans

InjectReadyClass.java

class InjectReadyClass {
  @Autowired
  public MyCoolService myCoolService; //public just for showing purposes
  
	InjectReadyClass(ApplicationContext ctx) {
		ctx.getAutowireCapableBeanFactory().autowireBeanProperties(
				this, AutowireCapableBeanFactory.AUTOWIRE_BY_NAME, false
		);
	}
  
}

SomeService.java

@Service
class SomeService {
  @Autowired
  ApplicationContext ctx;
  
  void someServiceMethod() {
    ...
    InjectReadyClass injectReadyInstance = new InjectReadyClass(ctx);
    assert injectReadyIntance.myCoolService != null //just to show it gets injected properly
    ...
  }
}