Code cleanup

facade/README.md

@@ -83,7 +83,7 @@ public abstract class DwarvenMineWorker {
 
   public abstract String name();
 
-  static enum Action {
+  enum Action {
     GO_TO_SLEEP, WAKE_UP, GO_HOME, GO_TO_MINE, WORK
   }
 }

facade/src/test/java/com/iluwatar/facade/DwarvenGoldmineFacadeTest.java

@@ -110,7 +110,7 @@ public class DwarvenGoldmineFacadeTest {
 
   private class InMemoryAppender extends AppenderBase<ILoggingEvent> {
 
-    private List<ILoggingEvent> log = new LinkedList<>();
+    private final List<ILoggingEvent> log = new LinkedList<>();
 
     public InMemoryAppender() {
       ((Logger) LoggerFactory.getLogger("root")).addAppender(this);