![]() ![]() Another day, another opportunity to learn more Kotlin. This is where things become… complicated. 101: Learning Kotlin visibility modifiers, internal modifier, modules. Kotlin’s “internal” Modifier as Seen From Java In the above example, the Foo class will only be accessible from a particular Maven module (or equivalents for other build tools). Of course it is possible to have compilation-only restrictions such as Kotlin’s internal (which basically just renames the method and adds some attributes in the class file - a jvm must silently ignore attributes not understood). public : Public declarations in the module are visible to all the places in the module. In Kotlin you can use the same modifiers that are found in. Interface method in Kotlin should support protected & internal visibility modifier. Visibility/Access Modifiers inside Module. Introducing Kotlin’s “internal” Modifierįor those that do not know, internal modifier restricts the visibility of an element to a particular module: internal class Foo Visibility modifiers define how your declarations are accessible from other classes and packages. So… I wonder how Kotlin’s internal classes are represented in and seen from pure Java then? It’s not surprising since it was built on top of the JVM and a lot of its syntax sugar is actually implemented by using standard Java features!įor example, if we define an extension method on a standard String class, underneath it’s just a standard static method: fun String.asHelloWorld() : String = "Hello $this" Kotlin features almost excellent compatibility with Java. ![]()
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