diff --git a/decorator/src/main/java/com/iluwatar/decorator/App.java b/decorator/src/main/java/com/iluwatar/decorator/App.java
index 88e1c710317558aee42456c24a438e5324a482a6..a9eabf6068c06497dd27dea9148318d092a2bba5 100644
--- a/decorator/src/main/java/com/iluwatar/decorator/App.java
+++ b/decorator/src/main/java/com/iluwatar/decorator/App.java
@@ -23,11 +23,13 @@ public class App {
 		Hostile troll = new Troll();
 		troll.attack();
 		troll.fleeBattle();
+		System.out.printf("Simple troll power %d.\n", troll.getAttackPower());
 
 		// change the behavior of the simple troll by adding a decorator
 		System.out.println("\nA smart looking troll surprises you.");
 		Hostile smart = new SmartTroll(troll);
 		smart.attack();
 		smart.fleeBattle();
+		System.out.printf("Smart troll power %d.\n", smart.getAttackPower());
 	}
 }
diff --git a/decorator/src/main/java/com/iluwatar/decorator/Hostile.java b/decorator/src/main/java/com/iluwatar/decorator/Hostile.java
index 4df751cca69da2f669768dbd19d3a1216843ca8e..7090725017f4c64a22c28167807e894d642a9b4e 100644
--- a/decorator/src/main/java/com/iluwatar/decorator/Hostile.java
+++ b/decorator/src/main/java/com/iluwatar/decorator/Hostile.java
@@ -9,6 +9,8 @@ public interface Hostile {
 
 	void attack();
 
+	int getAttackPower();
+
 	void fleeBattle();
 
 }
diff --git a/decorator/src/main/java/com/iluwatar/decorator/SmartTroll.java b/decorator/src/main/java/com/iluwatar/decorator/SmartTroll.java
index 22ba88dc88b806c74798b3e093f11692e48927a5..909f94c952ff11990157d15ea3528f7312644ed2 100644
--- a/decorator/src/main/java/com/iluwatar/decorator/SmartTroll.java
+++ b/decorator/src/main/java/com/iluwatar/decorator/SmartTroll.java
@@ -21,6 +21,12 @@ public class SmartTroll implements Hostile {
 		decorated.attack();
 	}
 
+	@Override
+	public int getAttackPower() {
+		// decorated troll power + 20 because it is smart
+		return decorated.getAttackPower() + 20;
+	}
+
 	@Override
 	public void fleeBattle() {
 		System.out.println("The troll calls for help!");
diff --git a/decorator/src/main/java/com/iluwatar/decorator/Troll.java b/decorator/src/main/java/com/iluwatar/decorator/Troll.java
index 11e9b9d1afdfe4ce5f1819f99c1bf4f320c6cb6a..85d873dbe5c13af335707d41ba9cfcd80c531f7f 100644
--- a/decorator/src/main/java/com/iluwatar/decorator/Troll.java
+++ b/decorator/src/main/java/com/iluwatar/decorator/Troll.java
@@ -11,6 +11,11 @@ public class Troll implements Hostile {
 		System.out.println("The troll swings at you with a club!");
 	}
 
+	@Override
+	public int getAttackPower() {
+		return 10;
+	}
+
 	public void fleeBattle() {
 		System.out.println("The troll shrieks in horror and runs away!");
 	}