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:



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

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Output:

value: 452146.0

Program 2:

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

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Output:

value: 13421.0

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

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