My latest project is ExpensesSpreadsheet.NET. It is the simplest and easiest solution I could come up with to track and categorize expenses … in a spreadsheet. Let’s call it a niche web application, so it’s probably not for every one, but it should fit some extremely well. It runs on Heroku’s Node.js stack.
For SEO reasons it’s important to make sure that users only visit your site through a single domain name. Either www.example.com or example.com, but not both. In most cases a .htaccess change is the easiest fix. But not when you’re deploying to an environment that doesn’t have Apache, like Heroku. Here’s a quick way to [...]
If you want to integrate PayPal with your Google AppEngine application, there are a limited number of options available. My own open source project offers a servlet that can parse and log IPN messages. This will quickly get you up and running with PayPal Payments Standard.
If you’ve ever created anything using jMonkeyEngine’s SimpleApplication and you use something other than the American standard QWERTY keyboard, you might have had the same frustration as me: Why isn’t there quick way to switch the keyboard layout? The SimpleApplication base class is supposed to make your life easier, yet there you are, completely stuck [...]
One question I get asked a lot, is where and how to host your Java web application. It’s all fine to create it inside Eclipse with an embedded server, but how do you get it to the people? For a long time, there was no answer for enthusiast programmers. There were only expensive and way [...]
Out of the box, Google’s App Engine supports versioned deployments. You can switch back and forth between revisions very easily, which is a great feature for properly testing an application before going live. There is one major problem: All versions of the application share the same datastore. So if you’re migrating your data you run [...]
If you have a WordPress.org blog and want to try a new plugin or a new look, you have two options: You could just install it on your running production site and risk crashing it. Or you could first experiment with it on a different test installation. Ideally this test system would resemble the real [...]
Google’s AppEngine is a great piece of software. But because of its particular nature, it isn’t always easy to integrate with existing frameworks such as Vaadin. In this article I take a look at how to integrate the App Engine Blobstore with Vaadin. You aren’t able to use Vaadin’s standard Upload component so there are [...]
In this tutorial you’ll learn how to create your very first Vaadin web application, how to run it on a local AppEngine development server and how to deploy it to the Google App Engine infrastructure. And all of that in about 5 to 10 minutes. Yes, if you have the necessary prerequisites installed, you’ll be [...]
So you’re ready to learn a new programming language? You might be entirely new to the world of application development, in that case, welcome! Or you’ve might have been creating applications for years, but now you feel you’re ready for something new. Picking a programming language can be a daunting task. There are an enormous [...]