Optional empty() method in Java with examples
Last Updated :
30 Jul, 2019
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:
import java.util.*;
public class GFG {
public static void main(String[] args)
{
Optional<Integer> op
= Optional.empty();
System.out.println( "Optional: "
+ op);
}
}
|
Output:
Optional: Optional.empty
Program 2:
import java.util.*;
public class GFG {
public static void main(String[] args)
{
Optional<String> op
= Optional.empty();
System.out.println( "Optional: "
+ op);
}
}
|
Output:
Optional: Optional.empty
Reference: https://docs.oracle.com/javase/9/docs/api/java/util/Optional.html#empty–
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