Merge pull request iluwatar#800 from trumvekhuya/master

Fix small points in Strategy and Decorator pattern.

decorator/README.md

@@ -104,9 +104,9 @@ troll.attack(); // The troll tries to grab you!
 troll.fleeBattle(); // The troll shrieks in horror and runs away!
 
 // change the behavior of the simple troll by adding a decorator
-troll = new ClubbedTroll(troll);
-troll.attack(); // The troll tries to grab you! The troll swings at you with a club!
-troll.fleeBattle(); // The troll shrieks in horror and runs away!
+Troll clubbedTroll = new ClubbedTroll(troll);
+clubbedTroll.attack(); // The troll tries to grab you! The troll swings at you with a club!
+clubbedTroll.fleeBattle(); // The troll shrieks in horror and runs away!
 ```
 
 ## Applicability

decorator/src/main/java/com/iluwatar/decorator/App.java

@@ -57,9 +57,9 @@ public static void main(String[] args) {
 
     // change the behavior of the simple troll by adding a decorator
     LOGGER.info("A troll with huge club surprises you.");
-    troll = new ClubbedTroll(troll);
-    troll.attack();
-    troll.fleeBattle();
-    LOGGER.info("Clubbed troll power {}.\n", troll.getAttackPower());
+    Troll clubbedTroll = new ClubbedTroll(troll);
+    clubbedTroll.attack();
+    clubbedTroll.fleeBattle();
+    LOGGER.info("Clubbed troll power {}.\n", clubbedTroll.getAttackPower());
   }
 }

decorator/src/test/java/com/iluwatar/decorator/ClubbedTrollTest.java

@@ -36,7 +36,7 @@
 public class ClubbedTrollTest {
 
   @Test
-  public void testClubbedTroll() throws Exception {
+  public void testClubbedTroll() {
     // Create a normal troll first, but make sure we can spy on it later on.
     final Troll simpleTroll = spy(new SimpleTroll());
 

decorator/src/test/java/com/iluwatar/decorator/SimpleTrollTest.java

@@ -53,7 +53,7 @@ public void tearDown() {
   }
 
   @Test
-  public void testTrollActions() throws Exception {
+  public void testTrollActions() {
     final SimpleTroll troll = new SimpleTroll();
     assertEquals(10, troll.getAttackPower());
 

strategy/src/test/java/com/iluwatar/strategy/DragonSlayerTest.java

@@ -52,7 +52,7 @@ public void testGoToBattle() {
    * Verify if the dragon slayer uses the new strategy during battle after a change of strategy
    */
   @Test
-  public void testChangeStrategy() throws Exception {
+  public void testChangeStrategy() {
     final DragonSlayingStrategy initialStrategy = mock(DragonSlayingStrategy.class);
     final DragonSlayer dragonSlayer = new DragonSlayer(initialStrategy);