Modify code structure

src/main/java/cwq/Launcher.java

@@ -1,5 +1,6 @@
 package cwq;
 
+import cwq.Ui.Main;
 import javafx.application.Application;
 
 /**

src/main/java/cwq/DialogBox.java → src/main/java/cwq/Ui/DialogBox.java

@@ -1,4 +1,4 @@
-package cwq;
+package cwq.Ui;
 
 import java.io.IOException;
 import java.util.Collections;

src/main/java/cwq/Main.java → src/main/java/cwq/Ui/Main.java

@@ -1,6 +1,8 @@
-package cwq;
+package cwq.Ui;
 
 import java.io.IOException;
+
+import cwq.CWQ;
 import javafx.application.Application;
 import javafx.fxml.FXMLLoader;
 import javafx.scene.Scene;

src/main/java/cwq/MainWindow.java → src/main/java/cwq/Ui/MainWindow.java

@@ -1,4 +1,4 @@
-package cwq;
+package cwq.Ui;
 
 import cwq.CWQ;
 import javafx.fxml.FXML;

src/main/resources/view/MainWindow.fxml

@@ -6,7 +6,7 @@
 <?import javafx.scene.layout.AnchorPane?>
 <?import javafx.scene.layout.VBox?>
 
-<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="400.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="cwq.MainWindow">
+<AnchorPane maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="600.0" prefWidth="400.0" xmlns="http://javafx.com/javafx/8.0.171" xmlns:fx="http://javafx.com/fxml/1" fx:controller="cwq.Ui.MainWindow">
     <children>
         <TextField fx:id="userInput" layoutY="558.0" onAction="#handleUserInput" prefHeight="41.0" prefWidth="324.0" AnchorPane.bottomAnchor="1.0" />
         <Button fx:id="sendButton" layoutX="324.0" layoutY="558.0" mnemonicParsing="false" onAction="#handleUserInput" prefHeight="41.0" prefWidth="76.0" text="Send" />