Injecting a reference to a bean which is of a final class fails

When using the @SpringBean annotation, injecting a bean that is of a final class such as String, fails. This is because LazyInitProxyFactory tries to create a subclass of the bean which will obviously fail when that class is marked final.

A possible fix would be to test the modifiers of the injected field for Modifier.isFinal(..), when this is true don't create a proxy but return the object directly.