REST API documentation with Swagger

Introduction When you create a REST API for a modern Web application, i.e. by using spring-boot, you need some kind of documentation. You have do document what a REST endpoint does, which input the endpoints expects, what is validated, and so on, and so on. Of course your documentation must be updated so it always …

Docker, applications and Traefik

Introduction A couple of weeks ago I started playing around with Docker. I set up a small server at home and I wanted to host several applications like a mailserver, nextcloud, an apache webserver hosting my panorama fotos, gitlab for my code and so on. It was not as complicated as I thought setting up …

Internet of Things (IOT) for a Java developer

Nowadays there is no possibility not to read about the new next thing: Internet of Thins (IOT). As a Java developer who mainly develops web applications and the backends IOT is not the daily business (at least in my case) but if you search hard enough you'll find a usecase. Usecase In my case the …

spring-mvp Vaadin addon

After my first successfully completed Vaadin project I knew: Vaadin is a very good technology but the provided possibilities to create event driven applications were too limited. Coming from Adobe Flex using the Cairngorm project I knew there should be more possibilities for dispatching events, register listeners and so on. The next project at work …

CloudFoundry Micro Cloud and Virtualbox

Clouds are very modern these days, so I decided to dive into the cloud, too. I descided to use CloudFoundry, because it is near to Spring and there are tools to use the cloud like a locally installed tomcat. But, how could it be different, it was not that easy to get the microcloud running. …

Quo vadis Flex?

A lot of things changed in the Adobe Flex world since I wrote my last entry. Adobe stopped the development for the Adobe Air Runtime for Linux systems, Adobe wanted to support Maven officially, Adobe stopped the development of FlashPlayer for Android and Adobe decided to give Flex to the Apache Foundation as a new …

Barcode Scanner v0.2

A couple of weeks ago a former colleague of mine asked me if it would be possible to integrate the barcode scanner application into his application which does not use any Java. Well, of course this is possible! Flex can call Javascript methods given in the surrounding HTML so I created the Barcode Scanner v0.2 …

Creating user interfaces with Wireframesketcher

A couple of weeks ago Peter Severin – the creator of WireframeSketcher contacted me and asked me if I would like to test his tool. Until now I used Balsamiq Mockups to sketch my possible GUIs so I was really looking forwart to testing WireframeSketcher. WireframeSketcher can be installed as RCP standalone version or as …

my first air application for android in google market

This week I published my first Adobe Air application for Android in the Google market. Originally I just wanted to test Flashbuilder Burrito how it feels to create a mobile application but after the application was finished, I wanted to test how the publish chain works. The application is a currency calculator which gets the …

Debugging Flex applications

Until yesterday it was fine for me using the integrated debugger in Flex-/Flashbuilder to debug my applications. It provides much comfort, nothing has to be configured, everything is fine. But currently I'm working on an application which consists of several modules which are built using flexmojos and I had the strange phenomenon that my application …