![]() ![]() ![]() However, members are constrained to the following types: This is similar to Java’s Documented.Īnnotation classes can have a constructor and members. So if you are planning to use repeatable annotations, you must target at least a JVM 1.8 property allows the annotation to be included in the generated documentation. In Java, this is introduced in version 8. However, there are other uses for annotation such as code generation but that is another topic in the next allows you to use the same annotation in a single type. This is the default retention policy.įor the purpose of this tutorial, we will be using RUNTIME as we will try to demonstrate annotation and its use in reflection. RUNTIME - Annotation persists in binary output and can be used via reflection. ![]() BINARY- Annotation persists in binary output but cannot be accessed via reflection.This is similar to Java’s SOURCE retention. SOURCE- Annotation is only valid in compile time and is removed in binary output.There are three types of retention in Kotlin. For example, annotating a method using the above code will result in a compile specifies the scope of the annotation. As previously mentioned, constrains the element in which the annotation can be attached. Multiple targets can be specified as well. ![]()
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