KotlinでJavaFXのHello Worldをするまで。

Controller.kt

package sample

class Controller {
}

Main.kt

package sample

import javafx.application.Application
import javafx.fxml.FXMLLoader
import javafx.scene.Parent
import javafx.scene.Scene
import javafx.stage.Stage
import sun.launcher.resources.launcher

class Main() : Application() {

    public override fun start(primaryStage : Stage?) {
        val root : Parent? = FXMLLoader.load(getClass().getResource("sample.fxml"))
        primaryStage!!.setTitle("Hello World")
        //primaryStage.setScene(Scene(root))
        primaryStage.setScene(Scene(root, 300.toDouble(), 275.toDouble()))
        primaryStage.show();
    }
}

fun main(args : Array<String>) {
    Application.launch(javaClass<Main>(), args.makeString(" "))
}

sample.fxml

<?xml version="1.0" encoding="UTF-8"?>

<?import java.lang.*?>
<?import javafx.geometry.Insets?>
<?import javafx.scene.control.*?>
<?import javafx.scene.control.Button?>
<?import javafx.scene.control.Label?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.scene.text.*?>

<AnchorPane prefHeight="40.0" prefWidth="125.0" xmlns:fx="http://javafx.com/fxml">
  <children>
    <Label text="Hello, World!">
      <font>
        <Font size="20.0" />
      </font>
    </Label>
  </children>
</AnchorPane>