We look into writing a QR code generator in java from scratch. QR Code has a lot of different technologies … More

After I got asked by my kid to download and install an auto clicker. I saw this as a teachable … More

Doing a manual upgrade of my Ceph cluster. In the same process, I get the Debian operating system upgraded that … More

In this video, I look into installing and enabling orchestration using cephadm. Then I will perform an automatic upgrade with … More

We look into lambda functions in java using example code and understand what functions could help you with. Java has … More

We look into writing a custom log4j appender in java and how to send you to log messages with an … More

We look into logrotate on Debian and figure out how timers actually work with a system with cron installed and … More

I took a look at the service provider interface in java. This is a needed interface to build simple services … More

In this tutorial, I go through how to create a video in java. Using the framework Xuggle we can create … More

This simple tutorial will show you how to parse JSON in java using JSON-simple from Google. JSON-simple is a bit … More