java - jsf 2.0 bean extends another bean Target Unreachable, 'null' returned null -

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this question has answer here:

public class superuser extends user implements serializable{   private static final long serialversionuid = 1l;    private string username;    private string pin;   //getters , setters  }

when use in managed bean , try access in facelets file this

<h:inputtext id="firstname" value="#{usermanager.superuser.firstname}" required="true" maxlength="30" size="30"/>

i exception

javax.el.propertynotfoundexception: /superuser/create.xhtml @18,96 value="#{usermanager.superuser.firstname}": target unreachable

does mean cannot extend java beans if want access properties?

thanks

it means #{usermanager.superuser} returned null , hence setfirstname() cannot called on it. jsf won't create nested object properties you. have yourself.

to fix this, ensure inside backing bean class behind #{usermanager} it's not null. e.g.

private superuser superuser = new superuser();

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