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.
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:
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