One of the most respected entry-level cloud native certifications available today is the CNCF Kubernetes and Cloud Native Associate (KCNA). So how do you pass the KCNA certification? You practice by ...

I realise comparing an aircraft cabin accommodating, say, 40 people with a restaurant that sits 300 is not quite level-playing-field material, but both involve essentially public spaces shared with ...

Have you ever wondered how Java seamlessly combines its primitive data types with object-oriented programming? Enter wrapper classes, an important but often overlooked Java feature. These special ...

Instance main methods and unnamed classes, coming in Java 21, will forever change how developers learn Java and bootstrap applications. Why? They provide a simple, clean and concise syntax to launch ...

Method references are a shorthand way to write lambda expressions that call a single method. Rather than implementing a method in a functional interface, a method reference simply points to an ...

Page Object is a design pattern used in test automation where the application's user interface is broken down into small, reusable components. It includes all the necessary logic and actions that can ...

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My answers to the exercises from University of Helsinki’s massive open online course (MOOC) on Java programming, part 1.