Kotlin Standard Library Cookbook

Kotlin and Java interoperability

This recipe is going to show how to combine both Java and Kotlin classes together and use them in the same application component. We will declare a Kotlin data class, called ColoredText, that holds two properties of the String and Color types. Apart from the properties, it is also going to expose a utility function inside a companion object responsible for text-processing. We are going to learn how to make use of those properties and how to declare the function from the ColoredText class to be visible as a JVM static method inside the Java class.