Greeter.java

package info.nkzn.sample.hogehoge;

public class Greeter {

    private String word;

    public Greeter(String word) {
        this.word = word;
    }

    public void sayFor(String name) {
        System.out.println(
            String.format("%s, %s", word, name));
    }

    public String getWord() {
        return word;
    }

    public void setWord(String word) {
        this.word = word;
    }

    public static void main(String[] args) {
        Greeter helloGreeter = new Greeter("Hello");
        helloGreeter.sayFor("Nkzn");

        Greeter goodMorningGreeter = 
            new Greeter("Good morning");
        goodMorningGreeter.sayFor("NPoi");
    }

}

Greeter.kt

package info.nkzn.sample.hogehoge

public class Greeter(val word: String) {
  val sayFor = {
    (name : String) -> 
        println("$word, $name!")
  }  
}

fun main(args : Array<String>) {
  val helloGreeter = Greeter("Hello")
  helloGreeter.sayFor("Nkzn")
  
  val goodMorningGreeter = 
      Greeter("Good morning")
  goodMorningGreeter.sayFor("NPoi")
}