The orElseGet(java.util.function.DoubleSupplier) 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 result produced by the supplying function, passed as the parameter
public double orElseGet(DoubleSupplier supplier)
Parameters: This method accepts the supplying function that produces a value to be returned.
Return value: This method returns the double value, if present, otherwise the result produced by the supplying function.
Exception: This method throw NullPodoubleerException if no value is present and the supplying function is null.
Below programs illustrate orElseGet(java.util.function.DoubleSupplier) method:
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