Apply suggestions from code review

Co-authored-by: delvh <dev.lh@web.de>

src/main/dev/lh/Food.java

@@ -12,7 +12,7 @@ import java.awt.Rectangle;
  * Created: <strong>01.07.2020</strong><br>
  * 
  * @author Kai S. K. Engelbart
- * @since Snake 1.1
+ * @since Snake 1.2
  */
 public final class Food implements Updateable {
 
@@ -26,7 +26,7 @@ public final class Food implements Updateable {
 	 * @param color       the color of the food item
 	 * @param lengthBonus the length added to the snake when the food item is eaten
 	 * @param bounds      the bounds of the food item
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public Food(Color color, int lengthBonus, Rectangle bounds) {
 		this.color = color;
@@ -42,13 +42,13 @@ public final class Food implements Updateable {
 
 	/**
 	 * @return the length added to the snake when the food item is eaten
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public int getLengthBonus() { return lengthBonus; }
 
 	/**
 	 * @return the bounds of the food item
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public Rectangle getBounds() { return bounds; }
 }

src/main/dev/lh/FoodFactory.java

@@ -36,7 +36,7 @@ public final class FoodFactory {
 	 * 
 	 * @param width  the width of the viewport
 	 * @param height the height of the viewport
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public FoodFactory(int width, int height) {
 		this.width = width;
@@ -45,7 +45,7 @@ public final class FoodFactory {
 
 	/**
 	 * @return a new food item
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public synchronized Food spawn() {
 		nextSpawnTime = System.currentTimeMillis() + random.nextInt(15000) + 1000;
@@ -63,7 +63,7 @@ public final class FoodFactory {
 
 	/**
 	 * @return the time after which a new food item should be spawned
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public long getNextSpawnTime() { return nextSpawnTime; }
 }

src/main/dev/lh/Handler.java

@@ -10,7 +10,7 @@ import java.awt.Graphics2D;
  * Created: <strong>01.07.2020</strong><br>
  * 
  * @author Kai S. K. Engelbart
- * @since Snake 1.1
+ * @since Snake 1.2
  */
 public final class Handler implements Updateable {
 
@@ -24,7 +24,7 @@ public final class Handler implements Updateable {
 	 * 
 	 * @param snake       the snake
 	 * @param foodFactory the food factory
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public Handler(Snake snake, FoodFactory foodFactory) {
 		this.snake = snake;

src/main/dev/lh/Snake.java

@@ -147,7 +147,7 @@ public class Snake implements Updateable {
 
 	/**
 	 * @return the current {@link Direction} of the snake
-	 * @since Snake 1.0
+	 * @since Snake 1.2
 	 */
 	public Direction getDirection() { return direction; }
 
@@ -159,7 +159,7 @@ public class Snake implements Updateable {
 
 	/**
 	 * @return a rectangle representing the head of the snake
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public Rectangle getHead() { return tiles.get(0); }
 }

src/main/dev/lh/Updateable.java

@@ -18,7 +18,7 @@ public interface Updateable {
 	 * Here should the actions be implemented that are supposed to happen when a new
 	 * frame gets created.
 	 *
-	 * @since Snake 1.0
+	 * @since Snake 1.2
 	 */
 	default void tick() {}
 

src/main/dev/lh/Viewport.java

@@ -14,7 +14,7 @@ import java.util.TimerTask;
  * Created: <strong>01.07.2020</strong><br>
  * 
  * @author Kai S. K. Engelbart
- * @since Snake 1.0
+ * @since Snake 1.2
  */
 public class Viewport extends Canvas {
 
@@ -33,7 +33,7 @@ public class Viewport extends Canvas {
 
 	/**
 	 * @param gameRoot the game object responsible for updating the rest
-	 * @since Snake 1.0
+	 * @since Snake 1.2
 	 */
 	public Viewport(Updateable gameRoot) {
 		this.gameRoot = gameRoot;
@@ -43,7 +43,7 @@ public class Viewport extends Canvas {
 	/**
 	 * Starts the render task.
 	 * 
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public void start() {
 		if (renderTask != null)
@@ -72,7 +72,7 @@ public class Viewport extends Canvas {
 	/**
 	 * Stops the render task.
 	 * 
-	 * @since Snake 1.1
+	 * @since Snake 1.2
 	 */
 	public void stop() {
 		renderTask.cancel();

src/main/dev/lh/ui/Endscreen.java

@@ -32,7 +32,7 @@ public class Endscreen extends JDialog {
 	public Endscreen(int score) {
 		this.score = score;
 		setTitle("Endscreen");
-		setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
+		setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
 		setBounds(100, 100, 700, 700);
 		getContentPane().setLayout(new BorderLayout());
 		contentPanel.setBorder(new EmptyBorder(5, 5, 5, 5));