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Tip of the Day
Language: Java
Expertise: Intermediate
Apr 29, 2019

WEBINAR:

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Return a Boolean if the Optional Is Empty

Beginning with JDK 11, we can return a boolean if the Optional is empty via Optional#isEmpty():

public boolean bookIsEmpty(long id) {
    Optional book = // code that fetches the book content

    return book.isEmpty();
}
Octavia Anghel
 
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