Interface CurrencyConverter

All Known Implementing Classes:

PolygonCurrencyConverter

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface CurrencyConverter

Converts currencies between themselve

Method Summary

Modifier and Type	Method	Description
Optional<Double>	convert(CurrencyDesignation from, CurrencyDesignation to)	How much of the {to currency} can we buy for 1 {from currency}

Method Details

convert

Optional<Double> convert(CurrencyDesignation from,
 CurrencyDesignation to)

How much of the {to currency} can we buy for 1 {from currency}

Parameters:

from - Currency we sell

to - Currency we buy

Returns:

exchange rate