Static Methods, Companion Objects, and Testing

Wed, 18 Jul 2018 00:00:00 +0000

I’ve been working with Kotlin a ton recently, both at work and for fun. It’s a fantastic language on the JVM that combines almost all of my favorite Scala features and adds in several new features as well. If you haven’t given it a shot yet and you’re a Java reader, give it a try! You’ll love how expressive it can be and how simple and concise some of the code can be. If you’re a Scala reader, you’ll feel familiar with a lot of the syntax and ideas (Objects, replacing statics for example). One thing Kotlin does that still feels a bit weird is it promotes the use of companion objects. A companion object sits inside a class definition and houses all the static methods which that class will own. Let’s convert a piece of Java code to Kotlin so you can see what I mean.

Static on BradCypert.com

Static Methods, Companion Objects, and Testing