I want to use the fluent api of Optional
and apply two Consumer
s to it.
I’m dreaming about something like this:
Optional.ofNullable(key) .map(Person::get) .ifPresent(this::printName) .ifPresent(this::printAddress); // not compiling, because ifPresent is void
How do I apply several Consumer
s to an Optional
?
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Answer
You can use this syntax:
ofNullable(key) .map(Person::get) .map(x -> {printName(x);return x;}) .map(x -> {printAddress(x);return x;});