What is a central theme of a typical bildungsroman such as j d Salinger's the catcher in the rye Charles dickens's great expectations or Johann david wyss's the Swiss family robins?

A common central theme of bildungsroman novels is the coming-of-age journey of the protagonist, who undergoes personal growth, self-discovery, and maturation as they navigate various challenges and experiences. These novels often explore themes of identity formation, moral development, and the search for meaning and purpose in life as the protagonist transitions from youth to adulthood.