Java FX + FXML

 Fxml1.java

import java.io.File;
import java.net.URL;

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class Fxml1 extends Application {

	public static void main(String[] args) {
		launch(args);
	}

	@Override
	public void start(Stage stage) throws Exception {
		URL file = new File("gui.fxml").toURI().toURL();
		Parent root = FXMLLoader.load(file);

		stage.setTitle("FXML Test");
		Scene scene = new Scene(root);
		stage.setScene(scene);
		stage.show();
	}
}

 gui.fxml

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

<?import javafx.scene.control.*?>
<?import javafx.scene.layout.*?>
<?import javafx.scene.text.*?>

<Pane prefWidth="350" prefHeight="212">
  <children>
    <Label text="Hello, World!" layoutX="16" layoutY="32">
    	<font>
    		<Font size="48.0" />
    	</font>
    </Label>
  </children>
</Pane>

 参考文献

 http://java-buddy.blogspot.jp/2012/06/set-font-of-text-using-fxml-vs-javafx.html

 http://www.ne.jp/asahi/hishidama/home/tech/java/fx/fxml/index.html