Hands-On Object-Oriented Programming with Kotlin

Calling static variables and functions

Open the CallJava file and add one static variable message:

public static String message = "Hello from Java";

As well as this, include one static method, add, which adds two variables and displays a message on the screen:

public static void add(int i, int j){    System.out.println(i + " + " + j + "=" + (i + j));}

Calling a static function or variable from Java to Kotlin is very simple. To do this, use the Java filename as a reference and call the required function or variable.

Look at the following Kotlin example to call the Java static variable:

fun callStaticFromJava() {    var message = CallJava.message    println("Java Message : ${message}")        CallJava.add(4,5)}

To call the static variable, use the Java ...