Java 8 enables us to add non-abstract method implementations to interfaces by utilizing the default keyword. This feature is also known as virtual extension methods. The formula is implemented as an ...

This article was originally posted on my blog. You should also read my Java 11 Tutorial (including new language and API features from Java 9, 10 and 11).

Java is one of the most in-demand programming languages in the world and one of the two official programming languages used in Android development (the other being Kotlin). Developers familiar with ...