Articles

I am currently working on a plugin that needs to receive some information from an LDAP/Active Directory using JNDI. That’s why I needed to set up a directory server in a short time and I didn’t want to waste much effort for here. Luckily for me the Apache Directory Studio saved my day and allowed me to set up everything I needed in a few minutes. Short and sweet: In this tutorial I’m going to show you how to configure everything you need in your Eclipse IDE and finally how to query the created LDAP server with a tiny java client using JNDI. ...

Message Driven Beans are no new concept due to the fact that they exist since EJB 2.0 but in Java EE 6 and the EJB 3.0 specification it is even more fun to use them. In this tutorial we’re going to take a look at the specification and create an example application that transfers some objects via the Java Message Service to a Message-Driven Bean deployed on a GlassFish application server. ...

Behaviour Driven Development is the keyword when we’re talking about test scenarios written in an ubiquitous language, strong interaction with stakeholders, product owners or testers and well described, common understandable test scenarios. The popular JBehave framework is our tool of choice here and allows us to decouple our test stories from the test classes, offers an integration for web tests using Selenium and finally there’s a helpful Maven plugin for JBehave, too. ...

I have created a new, free plugin for Confluence, the popular enterprise wiki. The plugin allows you to notify users of ongoing discussions in comments on a confluence page by posting a specific token including the user’s name like this: “@username:” Features Configurable notification settings in the administration area Several placeholders to be used in the e-mail template for the notifications User filtering to avoid sending duplicate e-mails For more detailed information take a look at the Maven generated project website ...

Last year I passed the exam for the “Oracle Certified Professional Java Programmer”successfully and wanted to share my exam preparation notes about common problems and pitfalls to be aware of. That’s why I have added some code and examples for my top 25 challenges below. Figure 1. ocpjp Exam Preparation I won’t cover how to prepare yourself for the exam, how the exam is structured or what is the best way to process the exam’s questions – these questions are very well covered by the SCJP study guide, JavaRanch.com or other resources of choice – I have listed a few at the and of this article in the resources section. ...

Today we’re going to take a look at the Mockito framework that not only does sound like my favourite summer cocktail but also offers nice testing, mocking/stubbing, test-spying features and mock injections. After that we’re going to take a look on how to mock static or final classes by extending Mockito’s capabilities with PowerMock. Prerequisites We don’t need much for the following samples .. Java of course, Maven dependency management and that’s all .. ...

Java EE 6 is out and it indeed offers an interesting stack of technologies. So in today’s tutorial we are going to build a small sample web application that builds on this stack using Enterprise JavaBeans, Java Persistence API, Bean Validation, CDI and finally Java Server Faces and PrimeFaces. The application we’re going to develop is a simple blog app that allows us to create new articles, list them and – finally delete them. We’re also covering some additional topics like JSF navigation, i18n, Ajax-enabled components and the deployment on the GlassFish application server. ...

Are you playing around with the shiny new 3.1 EJB API? Using Maven for your Java projects? Need an easy way to write and execute tests for your EJBs that depends on an Java Application Server? No problem using Maven Archetypes, the Maven EJB Plugin and the GlassFish embedded Application Container.. Prerequisites For the following tutorial we’re going to need an installation of Maven and of course – the Java Development Kit! ...

You want to add some validation logic to your Java beans? You want to achieve this with some shiny extendable annotations? Then give the Java Bean Validation standard aka JSR-303 a try.. We’re going to use the reference implementation for bean validation, Hibernate Validator in this tutorial but there are also links to other alternatives like Oval or Apache Bean Validation. So let’s begin and validate some stuff .. Prerequisites JDK >=6 Maven >=2 An IDE or text editor of choice ...

Often in a developer’s life there is a REST service to deal with and nowadays one wants a fast and clean solution to create a client for such a service. The following tutorial shows a quick approach using JAX-RS with its reference implementation, Jersey in combination with JAX-B for annotation driven marshalling between XML or JSON structures and our Java-Beans. Prerequisites The following stuff is needed to run the following examples and code samples ...