Let's try this annotation out and see how it works. Only JVM target bytecode version 1.8 (-JVM-target 1.8) or higher can generate default methods. Removing this annotation from the interface member changes the binary incompatibility in both modes. In this mode, use existing methods are binary compatible, but more methods are generated in bytecode. -Xjvm-default=compatibility: In addition to the default interface methods, generated compatibility access DefaultImplsClass that calls methods that access the default interface through composition.In this mode, use an existing method may break binary compatibility because it will effectively be from DefaultImplsClass to remove the method. -Xjvm-default=enable: For each generates default methods in the interface.The use of this annotation requires the compiler parameter to be specified: -xJVM-default =enable or -xJVM-default =compatibility. It is less verbose and more readable than XML. It is easy for humans to read and write and for machines to parse and generate. JSON (JavaScript Object Notation) is a lightweight data-interchange format. Specifies that JVM default methods are generated for non-abstract Kotlin interface members. Kotlin JSON tutorial shows how to do JSON serialization and deserialization in Kotlin. Kotlin official annotation address Today we'll learn and understand these common notes: JvmDefault JvmField JvmMultifileClass JvmName JvmOverloads JvmStatic Strictfp Synchronized Volatile Transient Kotlin makes it easier to interact with Java (PY) by providing some annotation parameters that make calling Kotlin easier and friendlier for Java.
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