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I recently upgraded my system from Java 6 to Java 7. Over all I’m really pleased with the improvement I’m seeing from Java 7 but the upgrade has come with a little cost. For some reason I’m getting a failure…
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Clinical Guard CMS 50EW
I recently came down with a very serious case of pneumonia which has left me pretty much stuck in bed for several weeks while I recover. Of course being a fully signed up member of the geek squad I can’t…
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Colours of ls
The ls command list the files and directories (and other items) in a given directory. It can be asked to colour the output that it produces to give you an indication of what each file is and what permissions it…
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Job Scheduling – The Timer Service
Most non-trivial applications require at least some asynchronous processing but direct use of the thread library is not allowed in a JEE container environment. To get around this limitation EJB 2.1 introduced a timer service which, although functional, wasn’t very feature…
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Getting Started with JEE 6 – Choices, Choices – Picking an Alternative
In the previous article we looked at how we can use the CDI qualifier system to pick which one of multiple possible implementations should be used when an injection takes place. In this article I show you how to decide…
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Getting Started with JEE 6 – CDI Qualifiers
In the last article we developed an application that had two alternative implementations of an EJB based QuoteService which unfortunately ran aground because CDI couldn’t choose which of our implementation to use. In this article I’ll discuss how to let…
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Getting Started with JEE 6 – Multiple Implementations of an EJB
In the previous part of this series we developed an application that contained a simple no interface EJB which fed quotes to a QuoteBean which, in turn, supplied them to the JSF page. In this part I’ll modify the QuoteService…
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Getting Started with JEE 6 – Creating an EJB
In the previous part we created a simple little application that comprised just a single bean and a JSF page. The page called the bean and asked for a quote which was then displayed. Under the hood though there was…
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Getting Started with JEE 6 – First Code
Now that we have created the project it’s time to throw caution to the wind and just start writing some code! Right click on the example.simpleproject node under Source Packages and select new… then Java Class. Call the class QuoteBean…
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Getting Started with JEE 6 – Creating a New Project
This short series of articles covers some of the basics of working with Java EE 6 (JEE6) and in particular JSF 2.0 and CDI (JSR 299 Context and Dependency Injection). JSF 2.0 and CDI bring some fantastic new functionality to…
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International Routing Department Scam
There is a scam doing the rounds that tries to infect your computer or get you to phone a premium rate number for computer support. It goes something like this: You get a phone call from an Indian sounding guy…
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Local transaction already has 1 non-XA Resource
While developing a bit of functionality that transferred data from one database to another in my current JEE 6 web application I came upon the exception below. Surprisingly for exceptions from deep within system this one is actually quite informative if you…