OptionalDouble orElse(double) method in Java with examples

The orElse(double) method helps us to get the value in this OptionalDouble object. If a value is not present in this OptionalDouble, then this method returns the value passed as the parameter. Syntax:

public double orElse(double other)

Parameters: This method accepts double the value to be returned, if no value is present. Return value: This method returns the value, if present, otherwise other. Below programs illustrate toString() method: Program 1:

Java

// Java program to demonstrate
// OptionalDouble.orElse(double) method

import java.util.OptionalDouble;

public class GFG {

    public static void main(String[] args)
    {

        // create a OptionalDouble
        OptionalDouble opDouble = OptionalDouble.of(452146);

        // get value using orElse
        double value = opDouble.orElse(13421);

        // print double value
        System.out.println("value: " + value);
    }
}

Output:

value: 452146.0

Program 2:

Java

// Java program to demonstrate
// OptionalDouble.orElse(double) method

import java.util.OptionalDouble;

public class GFG {

    public static void main(String[] args)
    {

        // create a OptionalDouble
        OptionalDouble opDouble = OptionalDouble.empty();

        // get value using orElse
        double value = opDouble.orElse(13421);

        // print double value
        System.out.println("value: " + value);
    }
}

Output:

value: 13421.0

References: https://docs.oracle.com/javase/10/docs/api/java/util/OptionalDouble.html#orElse(double)