Upgrade to java 16

javafx-template/src/main/java/app/App.java

@@ -0,0 +1,29 @@
+package groupid;
+
+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+import java.io.IOException;
+
+/**
+ * JavaFX App
+ */
+public class App extends Application {
+
+    private static Scene scene;
+
+    @Override
+    public void start(Stage stage) throws IOException {
+        FXMLLoader fxmlLoader = new FXMLLoader(this.getClass().getResource("App.fxml"));
+        Parent parent = fxmlLoader.load();
+        stage.setScene(new Scene(parent));
+        stage.show();
+    }
+
+    public static void main(String[] args) {
+        launch();
+    }
+}

javafx-template/src/main/java/app/AppController.java

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+package groupid;
+
+import java.io.IOException;
+import javafx.fxml.FXML;
+
+public class AppController {
+
+    @FXML
+    private void switchToSecondary() throws IOException {
+    }
+}

javafx-template/src/main/resources/app/App.fxml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.VBox?>
+<?import javafx.scene.control.Label?>
+<?import javafx.scene.control.Button?>
+<?import javafx.geometry.Insets?>
+
+<VBox alignment="CENTER" spacing="20.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="app.AppController">
+   <children>
+      <Label text="Primary View" />
+      <Button fx:id="primaryButton" text="Switch to Secondary View" onAction="#switchToSecondary"/>
+   </children>
+   <padding>
+      <Insets bottom="20.0" left="20.0" right="20.0" top="20.0" />
+   </padding>
+</VBox>