Tutorials by IT enthusiasts, for enthusiasts

Tutorials about the most trendy and popular Java and JavaScript frameworks.

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Validating the input of your REST API with Spring

In the next few weeks I will be writing a small web application and in these articles I’m going to explain certain aspects of it. Previous time I mentioned how you could secure your REST API (partially), and this time I will be talking about how to validate the input you send to the REST […]

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Securing your REST API with Spring Security

In the next couple of weeks I’m going to develop a small idea sharing/voting application, using several common concepts in web development. First of all, I’m going to write and secure a REST API with Spring Security.

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Testing modern web applications

If you’re a web developer like me, then you probably know that writing tests for an application means that you have to test various parts of the application. Modern web architectures usually contain the necessary front-end logic, a REST back-end and some data persistence. Having to test your application means that you want to cover […]

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Testing your Spring Boot application with Selenium

The past couple of weeks I wrote several kind of tests for my Spring Boot application, we started of with some integration tests for our REST service, and today I’m writing the last part of the series with some functional/integration tests for the application using Selenium.

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Testing your Spring Data JPA repository

With Spring Data JPA, persisting data is quite easy. You no longer need to write complex DAO’s or repositories, no, all you need is an interface. If you look at my Spring Boot tutorial, you will see that by writing a few lines of code for creating our interface, we’re able to read, update, delete and […]

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Executing Jasmine tests with Maven

A while ago I wrote my very first Spring Boot application and I showed you how fast it could be using Spring Boot and AngularJS. I also thought about testing all sides of the application, so I started with writing some integration tests for my REST API, then I wrote some unit tests using Mockito […]

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Unit testing with Mockito and AssertJ

A few weeks ago I wrote my very first Spring Boot application and I was quite astonished about the result. Now, I did want to complete the application by writing some tests and so I did. In my previous tutorial I wrote several integration tests, and now it’s time to write some unit tests as […]

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Easy integration testing with Spring Boot and REST-Assured

In my previous article I explained how you could rapidly create a completely working, responsive CRUD application with about 150 lines of code. That’s obviously nice, but Spring Boot also makes it easy to write integration tests for your application, because it’s easy to setup a running test application with a few annotations, so then […]

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Rapid prototyping with Spring Boot and AngularJS

Recently I wrote an article about writing modern webapps with Spring Data REST and AngularJS. It’s not that hard to write, but it can be done even easier with Spring Boot as pointed out in the comments by Greg Turnquist. I already planned on trying out Spring Boot after some amazing articles about Spring Boot […]

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An introduction to AngularJS: Writing your first controller

In this introduction tutorial series to AngularJS I’m going to build a small webapp introducing several aspects of AngularJS like controllers, filters, services and directives. I’m going to explain all of that by creating an artist/song-rating app, which (in the end) will look like: Awesome, don’t you think?

Creating a Slack bot with Bluemix, Node-RED and Watson

If you’re just like me and you’re over 20 years, you might have spent several years on IRC and you probably interacted with hundreds of bots over the years. You may have written your own bot, just like I did. Well, with todays frameworks, API’s and tools it’s a lot easier to write such a […]

Writing apps with React.js: Writing components using JSX

In my previous tutorial, I’ve set up gulp.js to build my React.js application, now it’s time to write that application. Like I said before, the app I’m going to build in this tutorial, is an application where you can add/remove songs and rate those. We have several components to implement, so let’s start.

Introduction to AngularJS

Are you new to AngularJS? Good! Just because you’re reading this means you’re willing to jump onto the JavaScript train towards the future of web development. Over the past years, HTML5, CSS3 and JavaScript became a valuable alternative to desktop applications. This entire new trend also caused an entire wave of new JavaScript ideas, libraries […]

Een introductie tot Node.js

In deze tutorial ga ik het hebben over Node.js. In de toekomst mag je je zeker aan meerdere Node.js tutorials verwachten die allerlei mogelijkheden van dit platform zullen illustreren.

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Spring tutorials

Spring is one of the most popular frameworks for Java development. The tutorials on this blog cover various aspects of developing web applications with Spring, like Spring Web MVC, Spring Boot, Spring Data, Spring Security, ... .

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AngularJS tutorials

JavaScript is quite popular lately and developing large scaled application became really easy thanks to the various frameworks popping everywhere. AngularJS, made by the folks of Google is one of these frameworks and within the tutorials I'm covering the basics of AngularJS.

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JavaScript tutorials

Recently, a lot of frameworks started to pop out of nowhere. It is hard to follow up with the latest frameworks, but with these tutorials I try to cover the basics of most frameworks like Ember.js, React.js, AngularJS, Dojo, D3, ... .

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