spring - @Inject , @AutoWired, @Resource & @ManagedProperty : which one should I use ,where and when? -

i'm using hibernate, spring & jsf application. i'm evolving application restfull webservice jersey(jax-rs). need annotated class @component. inside class, need call service grap stuffs database.

@component @path("/graphic") public class graphicservice {      //@autowired //@inject     //participantbo participantbo;      or             //@managedproperty("#{participantbo}")     //private participantbo participantbo; 

i meet annotations in tutorials don't know/understand meaning. i'd make check-up see if configuration whole application ok or if clean stuffs.

most of time, i'm using @managedproperty annotation include dependency (a servicebo 1 call dao) inside class annotated @managedbean.

@managedbean(name="participantcontroller") @viewscoped public class addparticipantbean  implements serializable{       private static final long serialversionuid = -6952203235934881190l;          @managedproperty(value="#{participantbo}")         participantbo participantbo; } 

i have applicationcontext.xml file declare classes way :

 <!-- participant data access object -->    <bean id="participantdao" class="x.x.x.dao.participant.participantdaoimpl" >         <property name="sessionfactory" ref="sessionfactory"></property>    </bean>         <!-- participant business object -->    <bean id="participantbo" class="x.x.x.bo.participant.participantboimpl" >         <property name="participantdao" ref="participantdao" />    </bean>  

is configuration done ? configure application differently ? , maybe without xml declaration ? using @inject or @autowired maybe ? use cases them ?

i prefere use standards java ee provides. , prefere annotate setters instead property directly. way more easy start doing unit testing (and mocking these objects). check answer here

for example class graphicservice this:

@component @path("/graphic") public class graphicservice {     participantbo participantbo;     @resource    public void setparticipantbo(participantbo participantbo){         this.participantbo = participantbo;    } 

more info @resource

hope helps.