How to create an empty Optional Instance in Java

The Optional class from java.util package is a container object that may or may not contain a non-null value, it is primarily used as a method return type where there is a clear need to represent "no result," and where using null is likely to cause errors.

We can create an empty Optional instance with the help of the empty() method.

Syntax:

public static <T> Optional<T> empty()

This method will return an empty Optional instance with no value.




Example:

    public static void main(String[] args) {

        Optional<String> emptyOptional = Optional.empty();

        if (!emptyOptional.isPresent()) {
            System.out.println("The Optional is empty.");
        } else {
            System.out.println("The Optional is not empty.");
        }
    }

Output:
The Optional is empty.