Chaining of Java Optional map and orElse (if-else-style)

Question

Is there an elegant and streaming way in Java to say \"map this Optional to another Optional with a computed value if the value exists, else return an empty Optional\"?

Answer 1

You don't need the orElse clause:

Optional<Float> amount = ...;
Optional<MonetaryAmount> myAmount =
    amount.map(theAmount -> FastMoney.of(theAmount, "EUR"));