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 …

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JSR 303 Bean ValidationViolationChecker

Introduction In my daily work I often use Java Bean Validation (JSR 303) to get rid of validation boiler plate code in Java methods. The problem As Java Bean Validation is just declarative using annotations I want to test the validation in my JUnit tests. One may say these are integration tests instead of unit …

Maven, spring-data JPA, EclipseLink and static weaving

Introduction My last Vaadin project at work is a somehow complex application and I was looking for a persistence layer which matches perfectly the given techniques Maven and Spring. I wanted to avoid Hibernate's lazy loading exceptions, so I searched for alternatives and found EclipseLink as standard JPA implementation (I also planed to use JPA …

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 …

Vaadin TouchKit and Spring

Vaadin provides a convenient and fast way to create Rich Internet Applications. Normally "Desktop applications" which run in desktop browsers are created with Vaadin. For mobile applications running the webbrowser of mobile devices Vaadin provides the TouchKit addon. Spring integration with Vaadin is not provided by default but can be upgraded by the Spring-Stuff addon. …