Could you please tell me how to run java code in kotlin file in this compiler.

Question

Kotlin Code
fun main() {     var myjavaobject = Numbers()     myjavaobject.myfunction() } 


Java Code
public class Numbers {     public void myfunction(){         System.out.println("I am from java file. My class name is Numbers. I'm getting called by kotlin code\n");     } } 
I want to know how can I use java code in my above kotlin code.