docs: update method

Author: iluwatar

update-method/README.md

@@ -49,7 +49,7 @@ public class World {
     entities = new ArrayList<>();
     isRunning = false;
   }
-  // ...
+  // Other properties and methods...
 }
 ```
 
@@ -124,23 +124,64 @@ public void addEntity(Entity entity) {
 In the `App` class, we can see how the `World` class and its methods are used to create a game world, add entities to it, and start the game loop.
 
 ```java
-var world = new World();
-var skeleton1 = new Skeleton(1, 10);
-var skeleton2 = new Skeleton(2, 70);
-var statue = new Statue(3, 20);
-world.addEntity(skeleton1);
-world.addEntity(skeleton2);
-world.addEntity(statue);
-world.run();
-Thread.sleep(GAME_RUNNING_TIME);
-world.stop();
+@Slf4j
+public class App {
+
+    private static final int GAME_RUNNING_TIME = 2000;
+
+    public static void main(String[] args) {
+        try {
+            var world = new World();
+            var skeleton1 = new Skeleton(1, 10);
+            var skeleton2 = new Skeleton(2, 70);
+            var statue = new Statue(3, 20);
+            world.addEntity(skeleton1);
+            world.addEntity(skeleton2);
+            world.addEntity(statue);
+            world.run();
+            Thread.sleep(GAME_RUNNING_TIME);
+            world.stop();
+        } catch (InterruptedException e) {
+            LOGGER.error(e.getMessage());
+        }
+    }
+}
 ```
 
-This is a basic implementation of the Update Method pattern. In a real-world application, the `Entity` class would likely have additional methods and properties, and the `update` method would contain more complex logic to simulate the entity's behavior.
+Console output:
 
-## Class diagram
+```
+14:46:33.181 [main] INFO com.iluwatar.updatemethod.World -- Start game.
+14:46:33.280 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 11.
+14:46:33.281 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 71.
+14:46:33.452 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 12.
+14:46:33.452 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 72.
+14:46:33.621 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 13.
+14:46:33.621 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 73.
+14:46:33.793 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 14.
+14:46:33.793 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 74.
+14:46:33.885 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 15.
+14:46:33.885 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 75.
+14:46:34.113 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 16.
+14:46:34.113 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 76.
+14:46:34.324 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 17.
+14:46:34.324 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 77.
+14:46:34.574 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 18.
+14:46:34.575 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 78.
+14:46:34.730 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 19.
+14:46:34.731 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 79.
+14:46:34.803 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 20.
+14:46:34.803 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 80.
+14:46:34.979 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 21.
+14:46:34.979 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 81.
+14:46:35.045 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 22.
+14:46:35.046 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 82.
+14:46:35.187 [main] INFO com.iluwatar.updatemethod.World -- Stop game.
+14:46:35.288 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 1 is on position 23.
+14:46:35.289 [Thread-0] INFO com.iluwatar.updatemethod.Skeleton -- Skeleton 2 is on position 83.
+```
 
-![Update Method](./etc/update-method.urm.png "Update Method pattern class diagram")
+This is a basic implementation of the Update Method pattern. In a real-world application, the `Entity` class would likely have additional methods and properties, and the `update` method would contain more complex logic to simulate the entity's behavior.
 
 ## Applicability