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Tutorials by IT enthusiasts, for enthusiasts

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

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Exploring contract first options with Swagger

In my latest tutorial I documented a simple REST API with Swagger and Springfox. While this approach certainly showed how valuable documenting your REST API can be, we aren’t really “done” yet. In the great world of SOA we know something like “contract first development”, in which we initially describe the web service (using WSDL) […]

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Documenting your REST API with Swagger and Springfox

In my last tutorial I built a REST service together with a REST client. Like I said before, REST services are pretty great to allow reuse of your operations, however, to become reusable, you’ll have to properly document the available endpoints in your REST API, which endpoints there are, what they can do, what they […]

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Consuming REST API’s with Spring

In the last tutorial we created a small REST API. So now that the “producing REST API” step is completed, it’s time to start consuming it in another Spring boot project. Last time we’ve already set up a module for this project, called spring-boot-rest-client.

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Producing REST API’s with Spring

In the past couple of weeks I’ve written a few simple applications using Spring boot. With Spring MVC it’s also quite easy to serve REST API’s. In this article I’ll show you how to create such a REST API and how to consume one using RestTemplate.

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Handling forms with Spring Web and JSR-303

Up until now I’ve written several tutorials already about creating some readonly Spring boot application, but what’s cool about that? Eventually you’ll have to add/update some data in your application. In this example I’ll show you how you can do that with Spring Web and JSR-303 bean validations.

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Internationalization (i18n) with Spring

When developing applications, it can be interesting to put labels in a separate properties file, so that they can be re-used. For example, we often noticed that within our applications there were slight variations on specific words, which broke consistency. The easiest way to solve that is to centralize these labels. Another benefit you get […]

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Mapping with Dozer

Recently I wrote a tutorial about mapping with MapStruct. Testing it out for the first time, I noticed several differences between MapStruct and the mapping framework that I have the most experience in, called Dozer. That’s why I’m going to make a similar tutorial to my previous one, utilizing the Dozer framework this time, allowing […]

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Mapping beans with MapStruct

Recently, I wrote several tutorials about Spring boot and Spring Data JPA. A common issue that appears when writing large applications is that you don’t want to use your entities on your front-end. The reason behind this is that your entity usually resembles how your database and your tables look like, while your model or […]

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Take your Spring apps to the cloud with Bluemix and Docker

A few weeks ago I wrote an article about creating Docker images containing a Spring boot application, introducing both Docker, Docker Machine and Docker Compose. Today I’m going to take those images (both the application image and the MySQL image) to the cloud, using Bluemix.

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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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Using WebSockets with Spring, AngularJS and SockJS

A while ago I wrote a tutorial about writing a web application using Spring, AngularJS and WebSockets. However, that tutorial only used a fraction of what WebSockets could do, so in this tutorial I will explain how you can write a small chat app using the same frameworks; Spring, AngularJS, Stomp.js and SockJS.

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Making your AngularJS application grunt

A while back I wrote a small application to show you the main components of AngularJS, demonstrating controllers, services, filters and (custom) directives. In this tutorial I’m going to modify that application a bit and integrate GruntJS into it. For those who are wondering what Grunt is, well, it’s the task runner written in JavaScript, […]

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Building modern webapps using Spring Data REST and AngularJS

Recently I wrote several “exotic” applications using WebSockets. If you’re not into WebSockets, but you’re interested in using Spring and AngularJS, this article may suite you. In this example I will setup a web project using the Spring framework and an in memory embedded HSQL database. The client-side of the application will be written using […]

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CloudFlare, good or bad?

If you’re a developer like me and you spent some of your time on Reddit or StackOverflow, you probably might have encountered some articles about CloudFlare last week, like CloudFlare is ruining the internet (for me) and CloudFlare is ruining Stack Overflow for me with its recaptcha. Reading these articles made me want to evaluate […]

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2015: Year overview

The last day of 2015 is almost two weeks ago, time is going fast, that’s for sure. Around this time you see a lot of year reviews, awards for that year are being held, … . Me? I’m going to review what happened on g00glen00b.be as well.

40 Exclusive SEO & Development icons by Vecteezy

Shawn Rubel from Vecteezy offered you guys, the readers of this blog, access to 40 free and exclusive SEO & Development icons. All icons are licensed under the Creative Commons Attribution 3.0 Unported License. You can find the icons here: SEO & Development Icon Set. Feel free to use and alter them for any application. The […]

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2014: Year overview

The last few days of 2014 are passing by. On these days, people look back and make year overviews and top lists of the entire year. If I have to look back at g00glen00b.be for the past year, I can say that a lot of things changed. Neder… ehhh English If you look at the current top […]

2014: The language move

If you look at the tutorials written before 2014, you will notice that they’re written in another language, Dutch. This language move was necessary to keep this blog alive, and actually, it worked really well. According to Google Analytics there are 5x as many visitors as there were before. So, what does this exactly mean? […]

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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