The currency converter is a project related to the Alura course on object-oriented programming in JAVA. This project involves consuming an API, https://www.exchangerate-api.com/, using its standard mode. Based on the base currency provided by the user, an endpoint is consumed that returns a JSON. This JSON contains the conversion rates in key-value format for all currencies included in the API. The user selects the target currency and also enters the amount to perform the calculation and return the conversion result.
This folder contains:
- Main.java: It includes the main logic of the program and the user interaction.
In this folder, we find:
- CurrencyConverter.java: It manages the logic to obtain currency options and the user's input amount.
- ExchangeRateFetcher.java: It performs the HTTP request to obtain the conversion rate and processes the JSON response.
Inside this folder, we have:
- ConversionService.java: It contains the method to calculate the converted amount using the conversion rate.
- When the user enters a number that is not within the range to choose the currency
- When the user enters a string to choose the currency
- When the user enters a decimal separated by a comma when entering the amount
- When the user enters a string when entering the amount
- When for some unknown reason the conversion rate is not found within the API being consumed
