Added view abstraction for mvc pattern.

src/main/java/controller/src/ViewToControllerData.java

@@ -0,0 +1,9 @@
+/**
+ * @author Aaron Moser
+ * @date 01.12.2023
+ */
+package controller.src;
+
+public class ViewToControllerData {
+    
+}

src/main/java/gui/src/View.java

@@ -0,0 +1,16 @@
+/**
+ * @author Aaron Moser
+ * @date 01.12.2023
+ */
+package gui.src;
+
+import java.util.Queue;
+
+import controller.src.ControllerToViewData;
+import controller.src.ViewToControllerData;
+
+public interface View {
+    public void start();
+    public void setControllerToViewQueue(Queue<ControllerToViewData> queueControllerToView);
+    public void setViewToControllerQueue(Queue<ViewToControllerData> queueViewToController);
+}

src/main/java/gui/src/ViewThread.java

@@ -0,0 +1,39 @@
+/**
+ * @author Aaron Moser
+ * @date 01.12.2023
+ */
+package gui.src;
+
+import java.util.Queue;
+
+import controller.src.ControllerToViewData;
+import controller.src.ViewToControllerData;
+import gui.src.frames.MainFrame;
+
+public class ViewThread extends Thread implements View {
+    private static final String className = "ViewThread";
+
+    private Queue<ControllerToViewData> controllerToViewQueue;
+    private Queue<ViewToControllerData> viewToControllerQueue;
+
+    public void run() {
+        MainFrame.start();
+        printMessage("Swing ui thread was started.");
+    }
+
+    /**
+     * Prints a given message.
+     * @param message to print.
+     */
+    private static void printMessage(String message) {
+        System.out.println(className + ": " + message);
+    }
+
+    public void setControllerToViewQueue(Queue<ControllerToViewData> controllerToViewQueue) {
+        this.controllerToViewQueue = controllerToViewQueue;
+    }
+
+    public void setViewToControllerQueue(Queue<ViewToControllerData> viewToControllerQueue) {
+        this.viewToControllerQueue = viewToControllerQueue;
+    }
+}

src/main/java/gui/src/frames/MainFrame.java

@@ -2,7 +2,6 @@
  * @author Aaron Moser
  * @date 31.10.2023
  */
-
 package gui.src.frames;
 
 import javax.swing.JFrame;
@@ -39,7 +38,7 @@ public final class MainFrame extends JFrame implements Themeable {
         this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
     }
 
-    public static MainFrame getInstance() {
+    public static MainFrame start() {
         if (null == instance) {
             instance = new MainFrame();
         }