[refactor] Remove unnecessary declarations in service-locator pattern.

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;
         }
     }
-
 }