The container must ensure that:
• Initializer methods declared by a class X in the type hierarchy of the bean are called after all injected fields declared by X or by superclasses of X have been initialized, and after all Java EE component environment resource dependencies declared by X or by superclasses of X have been injected.
• Any @PostConstruct callback declared by a class X in the type hierarchy of the bean is called after all initializer meth- ods declared by X or by superclasses of X have been called, after all injected fields declared by X or by superclasses of X have been initialized, and after all Java EE component environment resource dependencies declared by X or by su- perclasses of X have been injected.
• Any servlet init() method is called after all initializer methods have been called, all injected fields have been initial- ized and all Java EE component environment resource dependencies have been injected.