Java 8 orElseThrow: why is compiler not complaining that method does not have a "throws" [duplicate]

Question

I have the following code:

public Trail getNewestTrail() {
    return trails.stream().max(Comparator.comparing(Trail::getTimestamp)).orElseThrow(NoSuchElementException::new);

}

I am not seeing any error without having getNewestTrail declared as throwing the exception -- why?

Answer 1

NoSuchElementException extends from java.lang.RuntimeException, it is uncheched exception:

Java programming language does not require methods to catch or to specify unchecked exceptions (RuntimeException, Error, and their subclasses)

you only need specify checked exception in method signature.