Creating a Currency Exchange Rate Calculator in Java

Disclaimer/Disclosure: Some of the content was synthetically produced using various Generative AI (artificial intelligence) tools; so, there may be inaccuracies or misleading information present in the video. Please consider this before relying on the content to make any decisions or take any actions etc. If you still have any concerns, please feel free to write them in a comment. Thank you.
---

Summary: Learn how to build a simple currency exchange rate calculator in Java to convert between different currencies using real-time exchange rates. This guide covers basic concepts of Java programming and integrating with an external API for exchange rate data retrieval.
---

In this guide, we'll create a simple currency exchange rate calculator in Java. The program will fetch real-time exchange rates from an external API and allow users to convert between different currencies.

Setting up the Project

First, let's set up our Java project. You can use any Java IDE or a simple text editor along with the command line.

Step 1: Import Necessary Libraries

We'll need to import libraries to handle HTTP requests and JSON parsing. Common choices include Apache HttpClient and Gson.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Define ExchangeRateCalculator Class

Create a class named ExchangeRateCalculator to encapsulate the functionality of our currency exchange rate calculator.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Implement the Main Method

Now, let's implement the main method to demonstrate the functionality of our currency exchange rate calculator.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

In this guide, we've built a simple currency exchange rate calculator in Java. We utilized an external API to fetch real-time exchange rates and performed currency conversion based on user input. This program can be further extended by adding error handling, user input validation, and a graphical user interface for enhanced usability.

Feel free to explore more features and integrations to enhance the functionality of your currency exchange rate calculator!