Bean's property is not setting from util:list object - spring

Question

I have declared following list using spring util namespace in my spring configuration file:
<util:list id="childList">
<ref bean="child1"/>
<ref bean="child2"/>
<ref bean="child3"/>
</util:list>
where all reference bean are marked with #Componant annotation and their respective beans are creating. But whenever I am trying to Autowired any beans property like:
#Component
public class ListTest{
#Autowired
#Qualifier("childList")
private List<IParent> list;
public List<IParent> getList() {
return list;
}
}
Gives exception as: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'listTest': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private java.util.List com.spring3.componentScanFilterTest.ListTest.list; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No matching bean of type [com.spring3.componentScanFilterTest.IParent] found for dependency [collection of com.spring3.componentScanFilterTest.IParent]: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {#org.springframework.beans.factory.annotation.Autowired(required=true), #org.springframework.beans.factory.annotation.Qualifier(value=childList)}
But instead of #Autowired and #Qualifier if I use as:
#Resource(name="childList")
It works. Why? As per my understanding #Autowired is used to autowire the property matching by type and #Qualifier is used to select any one bean from multiple ambiguous beans.
Please explain.

Answer 1

Spring docs says.
As a specific consequence of this semantic difference, beans that are themselves defined as a collection or map type cannot injected through #Autowired, because type matching is not properly applicable to them. Use #Resource for such beans, referring to the specific collection or map bean by unique name.
Hope this clear your doubt.

Answer 2

Type matching is not properly applicable to beans which defined as collection.
If you intend to express annotation-driven injection by name, do not primarily use #Autowired - even if is technically capable of referring to a bean name through #Qualifier values. Instead, prefer the JSR-250 #Resource annotation which is semantically defined to identify a specific target component by its unique name, with the declared type being irrelevant for the matching process.
As a specific consequence of this semantic difference, beans which are themselves defined as a collection or map type cannot be injected via #Autowired since type matching is not properly applicable to them. Use #Resource for such beans, referring to the specific collection/map bean by unique name.
Here:
http://docs.spring.io/spring/docs/2.5.x/reference/beans.html#beans-autowired-annotation-qualifiers
You are trying to get list of all beans of type Parent that have the qualifier "childList".