Are you practising CI? Find out by reading this post by Suzie Prince.

A "type-safe builder pattern in Java".

I should probably read this series of articles by Paulo Caroli before I try to convince my boss why implementing an MVP is a good idea.

A great way to configure a Raspberry Pi from scratch is PiBakery. After struggling a while with setting up a VNC server and some other things on a fresh Pi connected only via Ethernet (no display, keyboard, or mouse), finding PiBakery was very helpful.

Here's my configuration:

The long string …

I've fallen in love with Spark recently. Being unexperienced with web development, I stumbled upon Spark when I was looking for a small framework for setting up a simple web application based on Java. My learning curve has been steep and my first website (consisting of nothing but a simple …

Thanks to this answer on StackOverflow, I know how easy it is to reference the bean itself instead of one of its properties in a text field expression in JasperReports. The trick is to declare a field whose description is set to the keyword _THIS:

<field name="myBean" class="de …

The other day I learned on Twitter that I should update the Tor relay software on my Raspberry Pi as the Tor project had introduced a new Bridge Authority. So I lazily ran sudo apt-get update  followed by sudo apt-get upgrade only to notice that no new version of the …

I found the following regular expression (source) working fine for me:

^(?!01000|99999)(0[1-9]\\d{3}|[1-9]\\d{4})$

I tried two alternatives that did not work because they were too general:

[0-9]{5}

^([0]{1}[1-9]{1}|[1-9]{1}[0-9]{1})[0-9]{3}$

The first regex matches the …

Note to self: If the Let's Encrypt extension for Plesk fails to renew a certificate (when triggered manually), disable the automatic forwarding to an SSL connection in the Apache settings. This forced secure connection seems to disturb the renewal script.

The error I got was something like this:

Let's …

This blog post by Chris Stevens shows you how.