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Part 2: Testing the Paystack Integration Using Postman

Mar 30, 2023 · 2 min read · This is a follow-up article to Part 1, which guided Paystack payment gateway integration. It is going to be a very short and straightforward guide. We are going to be using Postman to test our endpoint. This article will definitely not make sense if ...

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Integrate Paystack Payment Gateway using Spring Boot

Mar 23, 2023 · 7 min read · Instead of having to create the wheel from scratch, which is a lot of work, using third-party APIs to collect payment makes accepting payment from consumers simple. In this article, we will mostly be focusing on Paystack. I'll walk you through the pr...

Command Line Interface for Beginners

Dec 25, 2022 · 3 min read · Command Line Interface or CLI as it usually refers to is an interface/tool that allows interaction with the hardware component of the computer. CLI however, does this through commands written in the console or terminal. GUI or Graphical User Interfac...

Using Predicate from the Functional Interface Package in Java

Sep 13, 2022 · 5 min read · The advent of Java 8 brought about java.util.function package in Java. It's a package that contains defined functional interfaces usually used with Lambda Expression. I'm assuming that you have basic knowledge of Lambda Expression if not go ahead and...

Lambda Expression Simplified

Aug 19, 2022 · 4 min read · In the release of Java 8, the Lambda Expression was introduced. It's a technique for writing clear and succinct code. One of those concepts that people, especially novices, find challenging to understand is Lambda Expression. You will learn about Lam...