In Java, the OptionalDouble object is a container object that may or may not contain a double value.
The
OptionalDoubleclass is present in thejava.utilpackage.
of methodThe of method is used to get an instance of the OptionalDouble class with the specified double value.
public static OptionalDouble of (double value)
This method takes as a parameter the double value that is to be present in the OptionalDouble object.
This method returns an OptionalDouble object with the specified double value.
The code below shows how to use the of method.
import java.util.OptionalDouble;class OptionalDoubleOfExample {public static void main(String[] args) {OptionalDouble optional1 = OptionalDouble.of(1.5);System.out.println("Optional 1: " + optional1);OptionalDouble optional2 = OptionalDouble.of(10.8967);System.out.println("Optional 2: " + optional2);}}
In the code above:
OptionalDouble class.import java.util.OptionalDouble;
of method to get an OptionalDouble object with the double value 1.5.OptionalDouble optional1 = OptionalDouble.of(1.5);
optional1; // OptionalDouble[1.5]
of method to get an OptionalDouble object with the value 10.8967.OptionalDouble optional2 = OptionalDouble.of(10.8967);
optional2;// OptionalDouble[10.8967]