Technical… Theoretical… Practical…
Introduction This tutorial will show you an example on how to document REST APIs using OpenAPI 3. When creating a REST API, good documentation is instrumental. Here we will use OpenAPI 3 in Spring application for creating documentation for REST APIs. We…
Here in this tutorial we will see how to use JWT (JSON Web Token) to authorize users and allow them to continue their works once they are logged in using their regular credentials (usernames and passwords). Users use their credentials to get…
Introduction In this tutorial we will see how to generate and validate JWT (JSON Web Token) using PHP programming language without using any third party library or plugin. I would not explain here what is JWT and why JWT is used but…
Introduction We will discuss here about the new feature added to Java 8 – a functional interface, Supplier and Consumer. In simple words, a supplier is a method that returns a value. A supplier is any method which takes no arguments and…
Introduction The tutorial, REST over HTTPS with client certificate authentication, will show you how we can use client certificate to handshake with server along with basic authentication for consuming the service. Even you can use header authentication along with client certificate to…
In this tutorial we will see an example of event driven streaming using Spring Cloud Stream and Apache Kafka streaming platform. How do we deal with some events, such as, a new user has registered to a portal, an order was placed,…
Introduction This tutorial will show you how to perform automation testing using Cucumber and Selenium web driver. Cucumber is a BDD framework used to perform behavior testing whereas Selenium is used to perform automation testing for web applications across different browsers and…
Introduction In this tutorial we will see how to work on Cucumber Tags. Tags in Cucumber are great ways to organize your features and scenarios. It is pretty much simple when we have one, two, or maybe five scenarios in a feature…
Introduction In this tutorial we will discuss how to create Java based Hibernate configurations. In Java based configuration we don’t need to create any XML or properties file for putting Hibernate configuration. We will put Hibernate configuration as well SessionFactory using Java…
Introduction In this tutorial I will show you how to send bulk emails with attachments using Python and Flask API. Flask API will be used to build the web based application and using Python’s email library we will send the email to…