Are there going to be two instances for a bean if I write @managed bean annotation and define same in faces-config.xml

Question

In my application in some places we are using @ManagedBean annoation for Person bean and for the same Person bean we defining in the faces-confing.xml like below at the same

Answer 1

There's a priority defined for this case. @ManagedBean annotation avoids having to configure an entry in faces-config.xml but, if you have both, the entry overrides the annotation.

In your case, there'll be only one instance configured like your faces-config.xml entry. In your case, both approaches are configured the same way but, should you change your faces-config.xml entry to something like

     personBean
     com.test.sample.Person
     session

Your bean will be registered under personBean rather than person (which is the name defined by the annotation).