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#tutorials

Choose wisely

Divided we stand: Optional

After counter-ranting about NULL, Lukas Eder wants to look at another “special value” that might change everything for Java 8: Optional. Functional programmers love it, so its worth digging around to find out whether or not you should follow suit.

The smart home needs standards

Building a smart home IoT with OSGi

In the past two to three years, OSGi has gone from being an outdated Java-based connected home specification to a mainstream IoT technology. Here we take a look at the myriad of IoT standards and the most successful examples of OSGi IoT implementations.

JAX-WS API Tutorial

Creating SOAP Web Services using JAX-WS

This article explains how to create SOAP-based web services using the JAX-WS API and deploy it with Tomcat. The tutorial follows a step-by-step approach to writing a client using Java’s wsimport utility.

Part I – Memory and CPU usage is centralized to the server

Easy Swing to Web with Vaadin

In the first part of JAXenter’s series on Vaadin-based web apps, Matti Tahvonen shows us why every architectural decision has its pros and cons, and why the same goes for switching from Swing to Vaadin in your UI layer.