How to update a character's name (e.g., from Vadim to Dmitry) using Spring Data, knowing its ID?

In Spring Data, to update a character's name by ID, you can do the following:

1. Retrieve the entity from the database by ID using findById.
2. Change the name field.
3. Save the updated entity using save.

Example:

Optional<Person> personOpt = personRepository.findById(id);
if (personOpt.isPresent()) {
    Person person = personOpt.get();
    person.setName("Dmitry");
    personRepository.save(person);
}

If you want to update directly without loading the entity, you can use a custom query with the @Modifying and @Query annotations in the repository.