Merge pull request #30 from ruslanpa/master

Makes a few improvements, basically unnecessary declarations, formatting

builder/src/main/java/com/iluwatar/HairType.java

@@ -2,11 +2,16 @@ package com.iluwatar;
 
 public enum HairType {
 
-	BALD, SHORT, CURLY, LONG_STRAIGHT, LONG_CURLY;
+	BALD("bald"), SHORT("short"), CURLY("curly"), LONG_STRAIGHT("long straight"), LONG_CURLY("long curly");
+
+    private String title;
+
+    HairType(String title) {
+        this.title = title;
+    }
 
     @Override
 	public String toString() {
-		return name().toLowerCase().replaceAll("_", " ");
+		return title;
 	}
-
 }

command/src/main/java/com/iluwatar/Goblin.java

@@ -3,8 +3,8 @@ package com.iluwatar;
 public class Goblin extends Target {
 
 	public Goblin() {
-		this.setSize(Size.NORMAL);
-		this.setVisibility(Visibility.VISIBLE);
+		setSize(Size.NORMAL);
+		setVisibility(Visibility.VISIBLE);
 	}
 
 	@Override

command/src/main/java/com/iluwatar/InvisibilitySpell.java

@@ -4,10 +4,6 @@ public class InvisibilitySpell extends Command {
 
 	private Target target;
 
-	public InvisibilitySpell() {
-		target = null;
-	}
-
 	@Override
 	public void execute(Target target) {
 		target.setVisibility(Visibility.INVISIBLE);

command/src/main/java/com/iluwatar/ShrinkSpell.java

@@ -3,14 +3,8 @@ package com.iluwatar;
 public class ShrinkSpell extends Command {
 
 	private Size oldSize;
-
 	private Target target;
 
-	public ShrinkSpell() {
-		oldSize = null;
-		target = null;
-	}
-
 	@Override
 	public void execute(Target target) {
 		oldSize = target.getSize();

command/src/main/java/com/iluwatar/Wizard.java

@@ -5,9 +5,8 @@ public class Wizard extends Target {
 	private Command previousSpell;
 
 	public Wizard() {
-		this.setSize(Size.NORMAL);
-		this.setVisibility(Visibility.VISIBLE);
-		previousSpell = null;
+		setSize(Size.NORMAL);
+		setVisibility(Visibility.VISIBLE);
 	}
 
 	public void castSpell(Command command, Target target) {

facade/src/main/java/com/iluwatar/DwarvenGoldmineFacade.java

@@ -1,6 +1,7 @@
 package com.iluwatar;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 
 /**
@@ -15,7 +16,7 @@ import java.util.List;
  */
 public class DwarvenGoldmineFacade {
 
-	List<DwarvenMineWorker> workers;
+	private final List<DwarvenMineWorker> workers;
 
 	public DwarvenGoldmineFacade() {
 		workers = new ArrayList<>();
@@ -25,23 +26,20 @@ public class DwarvenGoldmineFacade {
 	}
 
 	public void startNewDay() {
-		for (DwarvenMineWorker worker : workers) {
-			worker.wakeUp();
-			worker.goToMine();
-		}
+        makeActions(workers, DwarvenMineWorker.Action.WAKE_UP, DwarvenMineWorker.Action.GO_TO_MINE);
 	}
 
 	public void digOutGold() {
-		for (DwarvenMineWorker worker : workers) {
-			worker.work();
-		}
+        makeActions(workers, DwarvenMineWorker.Action.WORK);
 	}
 
 	public void endDay() {
-		for (DwarvenMineWorker worker : workers) {
-			worker.goHome();
-			worker.goToSleep();
-		}
+        makeActions(workers, DwarvenMineWorker.Action.GO_HOME, DwarvenMineWorker.Action.GO_TO_SLEEP);
 	}
 
+    private void makeActions(Collection<DwarvenMineWorker> workers, DwarvenMineWorker.Action... actions) {
+        for (DwarvenMineWorker worker : workers) {
+            worker.action(actions);
+        }
+    }
 }

facade/src/main/java/com/iluwatar/DwarvenMineWorker.java

@@ -23,8 +23,40 @@ public abstract class DwarvenMineWorker {
 		System.out.println(name() + " goes to the mine.");
 	}
 
+    private void action(Action action) {
+        switch (action) {
+            case GO_TO_SLEEP:
+                goToSleep();
+                break;
+            case WAKE_UP:
+                wakeUp();
+                break;
+            case GO_HOME:
+                goHome();
+                break;
+            case GO_TO_MINE:
+                goToMine();
+                break;
+            case WORK:
+                work();
+                break;
+            default:
+                System.out.println("Undefined action");
+                break;
+        }
+    }
+
+    public void action(Action... actions) {
+        for (Action action : actions) {
+            action(action);
+        }
+    }
+
 	public abstract void work();
 
 	public abstract String name();
 
+    static enum Action {
+        GO_TO_SLEEP, WAKE_UP, GO_HOME, GO_TO_MINE, WORK
+    }
 }

mediator/src/main/java/com/iluwatar/Action.java

@@ -7,12 +7,22 @@ package com.iluwatar;
  */
 public enum Action {
 
-	HUNT("hunted a rabbit"), TALE("tells a tale"), GOLD("found gold"), ENEMY("spotted enemies"), NONE("");
+    HUNT("hunted a rabbit", "arrives for dinner"),
+    TALE("tells a tale", "comes to listen"),
+    GOLD("found gold", "takes his share of the gold"),
+    ENEMY("spotted enemies", "runs for cover"),
+    NONE("", "");
 
     private String title;
+    private String description;
 
-    Action(String title) {
+    Action(String title, String description) {
         this.title = title;
+        this.description = description;
+    }
+
+    public String getDescription() {
+        return description;
     }
 
     public String toString() {

mediator/src/main/java/com/iluwatar/PartyImpl.java

@@ -10,7 +10,7 @@ import java.util.List;
  */
 public class PartyImpl implements Party {
 
-	private List<PartyMember> members;
+	private final List<PartyMember> members;
 
 	public PartyImpl() {
 		members = new ArrayList<>();

mediator/src/main/java/com/iluwatar/PartyMemberBase.java

@@ -17,24 +17,7 @@ public abstract class PartyMemberBase implements PartyMember {
 
 	@Override
 	public void partyAction(Action action) {
-		String s = this + " ";
-		switch (action) {
-		case ENEMY:
-			s = s + "runs for cover";
-			break;
-		case GOLD:
-			s = s + "takes his share of the gold";
-			break;
-		case HUNT:
-			s = s + "arrives for dinner";
-			break;
-		case TALE:
-			s = s + "comes to listen";
-			break;
-		default:
-			break;
-		}
-		System.out.println(s);
+		System.out.println(this + " " + action.getDescription());
 	}
 
 	@Override

observer/src/main/java/com/iluwatar/generic/Observer.java

@@ -1,5 +1,6 @@
 package com.iluwatar.generic;
 
 public interface Observer<S extends Observable<S, O, A>, O extends Observer<S, O, A>, A> {
-    public void update(S subject, A argument);
+
+    void update(S subject, A argument);
 }

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

@@ -48,6 +48,4 @@ public class App {
         else
             System.out.println("Poor " + servant.name + ". His days are numbered");
     }
-	
-	
 }

servant/src/main/java/com/iluwatar/King.java

@@ -1,8 +1,10 @@
 package com.iluwatar;
 
 public class King implements Royalty {
-	private boolean isDrunk = false, isHungry = true, isHappy = false;
-	private boolean complimentReceived = false;
+    private boolean isDrunk;
+    private boolean isHungry = true;
+    private boolean isHappy;
+    private boolean complimentReceived;
 
     @Override
     public void getFed() {

servant/src/main/java/com/iluwatar/Queen.java

@@ -1,8 +1,11 @@
 package com.iluwatar;
 
 public class Queen implements Royalty {
-	private boolean isDrunk = true, isHungry = false, isHappy = false;
-	private boolean isFlirty = true, complimentReceived = false;
+    private boolean isDrunk = true;
+    private boolean isHungry;
+    private boolean isHappy;
+    private boolean isFlirty = true;
+    private boolean complimentReceived;
 
     @Override
     public void getFed() {

servant/src/main/java/com/iluwatar/Royalty.java

@@ -1,9 +1,14 @@
 package com.iluwatar;
 
 interface Royalty {
-	public void getFed();
-	public void getDrink();
-	public void changeMood();
-	public void receiveCompliments();
-	public boolean getMood();
+
+    void getFed();
+
+    void getDrink();
+
+    void changeMood();
+
+    void receiveCompliments();
+
+    boolean getMood();
 }

service-locator/src/main/java/com/iluwatar/App.java

@@ -1,9 +1,10 @@
 package com.iluwatar;
+
 /**
  * Service locator pattern, used to lookup jndi services
  * and cache them for subsequent requests.
- * @author saifasif
  *
+ * @author saifasif
  */
 public class App {
     public static void main(String[] args) {
@@ -16,5 +17,4 @@ public class App {
         service = ServiceLocator.getService("jndi/serviceA");
         service.execute();
     }
-
 }

service-locator/src/main/java/com/iluwatar/InitContext.java

@@ -3,16 +3,17 @@ package com.iluwatar;
 /**
  * For JNDI lookup of services from the web.xml. Will match name of the service name that
  * is being requested and return a newly created service object with the name
- * @author saifasif
  *
+ * @author saifasif
  */
 public class InitContext {
 
     /**
      * Perform the lookup based on the service name. The returned object will need to be
      * casted into a {@link Service}
-	 * @param serviceName
-	 * @return 
+     *
+     * @param serviceName a string
+     * @return an {@link Object}
      */
     public Object lookup(String serviceName) {
         if (serviceName.equals("jndi/serviceA")) {
@@ -25,5 +26,4 @@ public class InitContext {
             return null;
         }
     }
-
 }

service-locator/src/main/java/com/iluwatar/Service.java

@@ -14,16 +14,15 @@ public interface Service {
 	/*
 	 * The human readable name of the service
 	 */
-	public String getName();
+	String getName();
 	
 	/*
 	 * Unique ID of the particular service
 	 */
-	public int getId();
+	int getId();
 	
 	/*
 	 * The workflow method that defines what this service does
 	 */
-	public void execute();
-
+	void execute();
 }

service-locator/src/main/java/com/iluwatar/ServiceCache.java

@@ -8,21 +8,21 @@ import java.util.Map;
  * On first hit, the cache will be empty and thus any service that is being requested, will be
  * created fresh and then placed into the cache map. On next hit, if same service name will
  * be requested, it will be returned from the cache
- * @author saifasif
  *
+ * @author saifasif
  */
 public class ServiceCache {
 
-	private Map<String, Service> serviceCache;
+    private final Map<String, Service> serviceCache;
 
     public ServiceCache() {
         serviceCache = new HashMap<String, Service>();
     }
 
     /**
-	 * Get the service from the cache. null if no service is found matching the 
-	 * name
-	 * @param serviceName
+     * Get the service from the cache. null if no service is found matching the name
+     *
+     * @param serviceName a string
      * @return {@link Service}
      */
     public Service getService(String serviceName) {
@@ -38,7 +38,8 @@ public class ServiceCache {
 
     /**
      * Adds the service into the cache map
-	 * @param newService
+     *
+     * @param newService a {@link Service}
      */
     public void addService(Service newService) {
         serviceCache.put(newService.getName(), newService);

service-locator/src/main/java/com/iluwatar/ServiceImpl.java

@@ -4,13 +4,13 @@ package com.iluwatar;
  * This is a single service implementation of a sample service. This is the actual
  * service that will process the request. The reference for this service is to
  * be looked upon in the JNDI server that can be set in the web.xml deployment descriptor
- * @author saifasif
  *
+ * @author saifasif
  */
 public class ServiceImpl implements Service {
 
-	private String serviceName;
-	private int id;
+    private final String serviceName;
+    private final int id;
 
     public ServiceImpl(String serviceName) {
         // set the service name

service-locator/src/main/java/com/iluwatar/ServiceLocator.java

@@ -5,7 +5,6 @@ package com.iluwatar;
  * Will fetch service from cache, otherwise creates a fresh service and update cache
  *
  * @author saifasif
- *
  */
 public class ServiceLocator {
 
@@ -15,7 +14,8 @@ public class ServiceLocator {
      * Fetch the service with the name param from the cache first,
      * if no service is found, lookup the service from the {@link InitContext} and
      * then add the newly created service into the cache map for future requests.
-	 * @param serviceJndiName
+     *
+     * @param serviceJndiName a string
      * @return {@link Service}
      */
     public static Service getService(String serviceJndiName) {
@@ -33,5 +33,4 @@ public class ServiceLocator {
             return serviceObj;
         }
     }
-
 }