Author Archives: Roland Krüger

Roland Krüger

About Roland Krüger

Software Engineer at Orientation in Objects GmbH. Find me on Google+, follow me on Twitter.

Gradle Script Kotlin

Eine neue Zusammenarbeit ist zwischen den Entwicklern des Build Tools Gradle und der Programmiersprache Kotlin entstanden. Der Gründer von Gradle Inc., Hans Dockter, hat sich mit dem Kotlin-Team von JetBrains zusammengesetzt und versucht herauszufinden, wie Gradle von Kotlin (und umgekehrt) … Continue reading

Posted in Build, config and deploy, Other languages for the Java VM | Tagged , | 1 Comment

ORM vs. SQL: When should I use a SQL-centric persistence layer?

One of the most common tasks when writing a Java application is to query a relational database through some persistence layer. In a typical setup, this persistence layer consists of a number of DAOs (data access objects) which perform specific … Continue reading

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Thymeleaf in Version 3 erschienen

Die Template Engine Thymeleaf (sprich /ˈtaɪmˌlɪːf/) wurde für das nächste große Major Release vollständig überarbeitet und steht nun in der Version 3 zur Verfügung. Die Release-Ankündigung findet sich im Thymeleaf-Forum. Thymeleaf ist eine Open Source Template Engine, die als Alternative … Continue reading

Posted in Java Web Frameworks | Tagged , , | Leave a comment

Building Vaadin UIs visually with the new Vaadin Designer

The Vaadin Plugin for Eclipse has ever been shipped with a visual designer for creating custom components for Vaadin applications. This visual designer enables you to construct a layout visually by dragging and dropping UI components on a given layout. … Continue reading

Posted in Java Web Frameworks | Tagged , | 1 Comment

Add Support for Java 8 Date & Time API to Jackson Serialized REST Web Services

When you are building REST web services using the Java 8 JDK, you might want to use the new Date & Time API to define temporal fields in your entity classes. For example, you might define the following simple User … Continue reading

Posted in Did you know?, SOA / Webservices | Tagged , , , , | 5 Comments

Vaadin Brings Excel Spreadsheets to the Web

With a new official add-on in the Vaadin directory, the Vaadin web application framework is taken to a new level: the Vaadin Spreadsheet add-on lets you load Microsoft Excel files in a Vaadin Spreadsheet component to be displayed and edited … Continue reading

Posted in Java Web Frameworks, Web as a Platform | Tagged , , , | Leave a comment

Vaadin 7.4 Released: Grid Component and Declarative Layouts

With version 7.4 Vaadin have released the next minor update of their web framework. This release introduces two very powerful new features: a brand new table component named Grid and declarative layouts.

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