The principles and real principles of the Kotlin Stdlib Common framework in the Java class library integration

The principles and implementation of the Kotlin Stdlib Common framework in the Java library integration Introduction: Kotlin is a static type programming language based on the Java virtual machine (JVM). It provides many powerful functions and grammar sugar to simplify the development process of Java.Kotlin Stdlib Common is a standard library for Kotlin, and it can be integrated with the Java library and other Java libraries.This article will introduce the principles and implementation of the Kotlin Stdlib Common framework in the Java library integration. 1. The basic concept of Kotlin Stdlib Common KOTLIN Stdlib Common is a bridge for Kotlin and Java -class libraries. It provides a set of common APIs that can easily use the Java library in the Kotlin project.Its design goal is to provide a unified development environment that enables developers to seamlessly integrate different class libraries, and at the same time provide a convenient way to handle the type conversion between KOTLIN and Java. 2. How to use Kotlin Stdlib Common To integrate the Java library in the Kotlin project, you need to add a reference to the Kotlin Stdlib Common in the construction configuration file of the project.The following is an example of the gradle configuration: groovy dependencies { implementation "org.jetbrains.kotlin:kotlin-stdlib-common:1.5.10" // Add more dependencies here } After adding the dependencies of KOTLIN Stdlib Common, you can use the function provided by the Java class library in the Kotlin code.By importing the class and methods of the Java library, you can call and use them directly in the Kotlin code. 3. The implementation principle of Kotlin Stdlib Common KOTLIN Stdlib Common achieves the integration of Java libraries by using KOTLIN collaborative programming (Coroutine Programming) feature and syntax sugar.It is mainly achieved through the following steps: -The type conversion: KOTLIN Stdlib Common allows using Java class and interfaces in the Kotlin code. It will automatically transform type conversion to use the function of Java libraries in Kotlin. -F function overload: KOTLIN Stdlib Common can map the heavy load function provided by the Java class library to Kotlin so that it is convenient to use in the Kotlin code. -Clene processing: Kotlin and Java are different in the way of abnormal treatment. Kotlin Stdlib Common provides a mechanism to deal with abnormal conversion between Kotlin and Java. 4. The interoperability between Kotlin and Java The interoperability between KOTLIN and Java is one of the important features of Kotlin Stdlib Common.Kotlin can call Java's code, and can also expand the Java class, re -load the Java method, etc.Conversely, Java can also call Kotlin's code and can use the Kotlin extension function and other features. The following is an example of a Java library integrated into the Kotlin project: Java class library code (hello.java): public class Hello { public static void sayHello() { System.out.println("Hello from Java!"); } } Kotlin code: kotlin fun main() { Hello.sayHello() } Run the Kotlin code to output "Hello from Java!", Which shows that the Java class library has been successfully integrated into the Kotlin project. Summarize: KOTLIN Stdlib Common is a framework for integrating the Java library in the Kotlin project. It provides a common API and type conversion mechanism, making the interoperability between Kotlin and Java easier and convenient.Through Kotlin Stdlib Commmon, developers can use the function of the Java library in the Kotlin project, and can also use the characteristics of Kotlin to simplify the development process.