Apache TomEE is an increasingly popular certified Java EE server that is based on Tomcat and other Apache libraries like OpenJPA and OpenEJB. The fundamental idea behind the project is to customize the widely beloved Tomcat as little as possible, throw in required (Apache) libraries and certify the ...

As a rehearsal for my workshop at GWT.create 2013, I gave an internal presentation/workshop last year about responsive layouts in Vaadin. The workshops at the conference weren’t recorded, but fortunately we record all of our internal presentations and trainings, so you have a chance to see this ...

Originally, the idea of the webinar was to show you how Spring has been used in different Vaadin projects in the past. However, once Josh Long from Pivotal got involved, we ended up creating a first prototype of a completely new integration that will sweep the floor with the conventional ways. This ...

Querydsl provides an API to write database queries in a fluent, compact and typesafe way. To strengthen Vaadin’s focus on the UI layer, a powerful persistence tool could help. What would happen if you tried to combine Querydsl with Vaadin, the de-facto way to write modern client-side web ...

There are numerous ways to visualize your data and Vaadin Charts comes with multiple types of graphs to choose from both for developers looking for a reliable java graph library to integrate to their Vaadin application and for the front-end developers. Despite the multitude of graphs available, it ...

Introduction Event-based callback methods provide a clear and asynchronous way to catch interactions and attach logic to them, executed whenever a suitable event enters the system. This is especially useful in user interface APIs where event callbacks make it straightforward to respond to user ...

Since we wouldn’t want to miss out on the popular sport of looking back at the previous year, I will start this year by taking a look into the past. Although it feels like it happened a very long time ago, it turns out to be less than one year since Vaadin 7.0 was released. Roughly halfway through ...

While working mainly with Eclipse in Vaadin R&D, I have personally used NetBeans from time to time to get some precious oversight on what other IDEs can do. Most often that has happened after banging my head to a wall with Eclipse issues :-). From what I have learned, NetBeans excels at least ...

Five year maintenance guarantee Five years is a long time in a fast changing technology environment. We believe that you appreciate that the support is guaranteed for the foundation of your applications, which should work for years to come. Vaadin has one of the most rigorous maintenance guarantees ...