Added main class with javafx

src/Main.java

+import javafx.application.Application;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.Parent;
+import javafx.scene.Scene;
+import javafx.stage.Stage;
+
+public class Main extends Application {
+
+    @Override
+    public void start(Stage primaryStage) throws Exception{
+        Parent root = FXMLLoader.load(getClass().getResource("ui/main.fxml"));
+        primaryStage.setTitle("Main Window");
+        primaryStage.setScene(new Scene(root, 300, 275));
+        primaryStage.show();
+    }
+
+
+    public static void main(String[] args) {
+        launch(args);
+    }
+}

src/ui/main.fxml

+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import javafx.scene.layout.*?>
+
+<AnchorPane xmlns="http://javafx.com/javafx"
+            xmlns:fx="http://javafx.com/fxml"
+            fx:controller="Main"
+            prefHeight="400.0" prefWidth="600.0">
+</AnchorPane>