Optional empty() method in Java with examples

The empty() method of java.util.Optional class in Java is used to get an empty instance of this Optional class. This instance do not contain any value. Syntax:

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

Parameters: This method accepts nothing. Return value: This method returns an empty instance of this Optional class. Below programs illustrate empty() method: Program 1: Program 2:

Reference: https://docs.oracle.com/javase/9/docs/api/java/util/Optional.html#empty--