How to call Kotlin code in Java Application: Java and Kotlin Interoperability

Java is fully compatible with Kotlin . So to call java code in kotlin first write following java and 

kotlin code two separate file .

KotlinApplication.kt

fun main(args:Array<String>){

println("Kotlin Application Started ..... ")

}

fun navigateToKotlinApplication(){

println("Welcome in Kotlin Application ..... ")

}

JavaApplication.java

public class JavaApplication {

  public static void main(String []args){

  System.out.println("Java Application Started ...... ");

  System.out.println("---------------------------------- ");

  System.out.println("Navigating to Kotlin Application ......");

  System.out.println("--------------------------------- ");

  KotlinApplicationKt.navigateToKotlinApplication();

  }

}

Commands to compile and run above two code 

1 . First Compile KotlinApplication.kt file 

     kotlinc KotlinApplication.kt

Note :-  After Compiling of KotlinApplication.kt  kotlinc compiler conventionally generate KotlinApplicationKt.class   by default  kotlinc compiler append Kt in suffix of kotlin file name.

2 .  Running KotlinApplicationKt.class file 

      kotlin KotlinApplicationKt

3 . Compiling Java code JavaApplication.java 

    javac JavaApplication.java

4 . Running Java Application

     

    java  JavaApplication

Output in Console.....