Java “Losing its Mojo?” I Think Not!

Wired has an article titled Is Java Losing Its Mojo? While the article seems to contradict itself in some ways, I have to take issue with the general theme. As someone who pays attention, I simply haven’t seen this happening. On the contrary–It seems to me that Java continues to grow. Just peruse the job…

Everything about Java 8 – TechEmpower Blog

Everything about Java 8 – TechEmpower Blog

Java 8/Lambas

ZeroTurnaround has a post about lamba expressions in Java 8 with some examples. Really cool. That last time I even really heard of a lambda expression was in college while briefly learning Lisp. Lambda expressions can be tried out now for anyone wishing to take a look. I’ll be trying it out when I have…

C Overtakes Java in 2012

Interesting. I was surprised to see man of the entries on the list, especially MATLAB.

Java to Objective C Translator

Google Open Sources Java To Objective-C Translator [i-programmer.info]

The Diamond Problem

The Diamond Problem “Fun” with multiple inheritance: Multiple inheritance – Wikipedia, the free encyclopedia Programmer Interview: What is the diamond problem? Does it exist in Java? (nope)

Apache Commons Configuration with JBoss 5

Here’s a problem that frustrated me for a bit: When using Apache Commons Configuration under JBoss 5, I kept running into the following error when attempting to save to my configuration file (which was a resource under the deployed /classes path): ERROR [org.apache.catalina.core.ContainerBase.[jboss.web].[localhost].[/xxxx].[xxxx]] (http-0.0.0.0-8080-1) Servlet.service() for servlet flint threw exception java.net.UnknownServiceException: protocol doesn’t support output…

Programming Trends to Watch

This was an interesting article: [JavaWorld: 11 Programming Trends to Watch]

JBoss Deployment Gotchas

The other day I was attempting to deploy a web app in JBoss (5.1) that had deployed just fine in Tomcat. In JBoss I kept seeing the following error: java.lang.ClassCastException: org.hibernate.ejb.HibernatePersistence cannot be cast to javax.persistence.spi.PersistenceProvider It turns out that the problem was because JBoss was first loading its own Hibernate classes. When my application…

Why I Dislike the @author Annotation

Here’s why I LOVE the @author annotation (in Javadoc comments): It makes me look really good having my name on tons of code. It shows that I am a high-output engineer. Here’s why I HATE the @author annotation: It implies some sort of ownership of a method, class or package to the rest of the…

A Bidirectional Add-To-List Mistake

Here’s a somewhat real-world example of a bad coding practice. When setting up bidirectional relationships, its important to remember that the add methods for adding to a list that results in a one-to-many and many-to-one relationship set the parent/child relationship in both directions. To make life simple, I like to provide a couple of different…

Is there ever a reason NOT to use an Artificial Primary Key?

I found this post on the subject of choosing a primary key. While Java Persistence Annotations allow us to use any field we want as a primary key (as long as it is naturally unique), is there a good reason to use anything that is not a surrogate/artificial primary key? There are plenty of fine…

Valuable Unit Tests in a Software Medical Device, Part 9

I thought I was done, but here is yet another good reason to incorporate complex function automated testing: Validation of multiple Java runtime environments. Fabrizio Giudici proposes this as a solution for testing with Java 7, but we can always take it a step further, verifying multiple OS environments as well. Of course, this requires…

Where Do Hibernate Transactions Fit In?

I recently got into a discussion on where Hibernate transactions should be placed in the scope of DAO logic. Some people have a desire to begin and end a transaction inside a DAO method. This is really a question of unit of work, and not scope of the DAO. Let’s say we have a single…

Hibernate: All Entities Must Have an Id–And All Tables Should Be Entities!

Sometimes the relational database designer in me sometimes wants to create a table with multiple columns without a primary key (i.e., only a foreign key lookup . An example of when this might be appropriate is when some parent data type had many attributes that don’t necessarily need to be persisted as unique entities (any…