Java Optional - If Else Statements

Question

So after some reading I\'ve seen that

if (optional.isPresent()) {
    //do smth
}

is not the preferred way to use Optional (http://www.ora

Answer 1

If you can incorporate the name into the Car constructor, then you can write this:

car = optional.map(id -> getCar(id))
              .orElseGet(() -> new Car(carName));

If you must call the setter separately from your constructor, you would end up with something like this:

car = optional.map(id -> getCar(id))
              .orElseGet(() -> {
                  Car c = new Car();
                  c.setName(carName);
                  return c;
              });