RockyCode

Occasionally, you'll need to install software that's only currently available as an .rpm package, meaning it is specifically packaged for a Red Hat Linux distro. These can be used to create a debian package, however, that can then be installed easily under Ubuntu. The program "alien" is used to do this

I've always wanted to know the best way to iterate over the elements in a map. Here's one way I've found that works.

My one bone of contention in using Linux has been the paucity of Exchange-compatible clients. I have the inclination to blame M$, but hey--my Android phone client works just fine. Evolution, Thunderbird, KMail--sure, I can get IMAP mail, but none have worked to the point of syncing with my appointments. Enter DavMail. I'll show you how to install it and set it up to work with your company's Exchange server.

Asserts were a breath of fresh air sweeping over the JVM landscape with Groovy. Now, feel the power of Groovy 1.7's power asserts!

When developing forms, we web developers always have to guard against the dreaded double-form submit, when impatient (or even patient) users, depending on the latency of form submissions, hit the “submit” or “enter” button multiple times, causing havoc to the application.

We all know that contains() is a handy way to check for the presence of an item in a HashSet. The java docs state: "Returns true if this collection contains the specified element. More formally, returns true if and only if this collection contains at least one element e such that (o==null ? e==null : o.equals(e))." So, you just need to override equals() the way you want, and everything's hunky-dory, right? Wrong!

Okay, Okay, I admit it. I'm javascript challanged. As a Java developer, I've looked down my nose at paltry javascript, treating it as a "me-too" technology trying to cash in on the hype surrounding java all these years.
As a result, I've missed out on a lot of js goodies. And, with javascript entering a renaissance of sorts, combined with the wildfire-like buzz surrounding libraries such as jquery, it's high time I learn some.

New version of virtual box. Problem was, I needed to uninstall the old version first.

In the Java world, we don’t get closures until Java 7. Groovy already has them. Here's what I’ve learned about these important programming structures, and why they're powerful.