Fix issues in VALIDATE phase

caching/src/main/java/com/iluwatar/caching/AppManager.java

@@ -23,9 +23,9 @@
 
 package com.iluwatar.caching;
 
+import com.iluwatar.caching.database.DbManager;
 import java.util.Optional;
 
-import com.iluwatar.caching.database.DbManager;
 import lombok.Data;
 import lombok.extern.slf4j.Slf4j;
 

caching/src/main/java/com/iluwatar/caching/CacheStore.java

@@ -23,11 +23,11 @@
 
 package com.iluwatar.caching;
 
+import com.iluwatar.caching.database.DbManager;
 import java.util.List;
 import java.util.Optional;
 import java.util.stream.Collectors;
 
-import com.iluwatar.caching.database.DbManager;
 import lombok.extern.slf4j.Slf4j;
 
 /**

caching/src/main/java/com/iluwatar/caching/LruCache.java

@@ -29,6 +29,7 @@ import java.util.List;
 import java.util.Map;
 import lombok.extern.slf4j.Slf4j;
 
+
 /**
  * Data structure/implementation of the application's cache. The data structure
  * consists of a hash table attached with a doubly linked-list. The linked-list
@@ -62,6 +63,7 @@ public class LruCache {
 
     /**
      * Node definition.
+     *
      * @param id      String
      * @param account {@link UserAccount}
      */
@@ -90,6 +92,7 @@ public class LruCache {
 
   /**
    * Constructor.
+   *
    * @param cap Integer.
    */
   public LruCache(final int cap) {
@@ -98,6 +101,7 @@ public class LruCache {
 
   /**
    * Get user account.
+   *
    * @param userId String
    * @return {@link UserAccount}
    */
@@ -113,6 +117,7 @@ public class LruCache {
 
   /**
    * Remove node from linked list.
+   *
    * @param node {@link Node}
    */
   public void remove(final Node node) {
@@ -130,6 +135,7 @@ public class LruCache {
 
   /**
    * Move node to the front of the list.
+   *
    * @param node {@link Node}
    */
   public void setHead(final Node node) {
@@ -146,6 +152,7 @@ public class LruCache {
 
   /**
    * Set user account.
+   *
    * @param userAccount {@link UserAccount}
    * @param userId      {@link String}
    */
@@ -171,6 +178,7 @@ public class LruCache {
 
   /**
    * Che if Cache cintains the userId.
+   *
    * @param userId {@link String}
    * @return boolean
    */
@@ -180,6 +188,7 @@ public class LruCache {
 
   /**
    * Invalidate cache for user.
+   *
    * @param userId {@link String}
    */
   public void invalidate(final String userId) {
@@ -192,7 +201,7 @@ public class LruCache {
   }
 
   /**
-     * Is cache full?
+   * Check if the cache is full.
    * @return boolean
    */
   public boolean isFull() {
@@ -201,6 +210,7 @@ public class LruCache {
 
   /**
    * Get LRU data.
+   *
    * @return {@link UserAccount}
    */
   public UserAccount getLruData() {
@@ -218,6 +228,7 @@ public class LruCache {
 
   /**
    * Returns cache data in list form.
+   *
    * @return {@link List}
    */
   public List<UserAccount> getCacheDataInListForm() {
@@ -232,6 +243,7 @@ public class LruCache {
 
   /**
    * Set cache capacity.
+   *
    * @param newCapacity int
    */
   public void setCapacity(final int newCapacity) {

caching/src/main/java/com/iluwatar/caching/database/DbManager.java

@@ -19,18 +19,21 @@ public interface DbManager {
    * @return {@link UserAccount}
    */
   UserAccount readFromDb(String userId);
+
   /**
    * Write to DB.
    * @param userAccount {@link UserAccount}
    * @return {@link UserAccount}
    */
   UserAccount writeToDb(UserAccount userAccount);
+
   /**
    * Update record.
    * @param userAccount {@link UserAccount}
    * @return {@link UserAccount}
    */
   UserAccount updateDb(UserAccount userAccount);
+
   /**
    * Update record or Insert if not exists.
    * @param userAccount {@link UserAccount}

caching/src/main/java/com/iluwatar/caching/database/MongoDb.java

@@ -1,5 +1,10 @@
 package com.iluwatar.caching.database;
 
+import static com.iluwatar.caching.constants.CachingConstants.ADD_INFO;
+import static com.iluwatar.caching.constants.CachingConstants.USER_ACCOUNT;
+import static com.iluwatar.caching.constants.CachingConstants.USER_ID;
+import static com.iluwatar.caching.constants.CachingConstants.USER_NAME;
+
 import com.iluwatar.caching.UserAccount;
 import com.iluwatar.caching.constants.CachingConstants;
 import com.mongodb.MongoClient;
@@ -7,11 +12,6 @@ import com.mongodb.client.MongoDatabase;
 import com.mongodb.client.model.UpdateOptions;
 import org.bson.Document;
 
-import static com.iluwatar.caching.constants.CachingConstants.USER_NAME;
-import static com.iluwatar.caching.constants.CachingConstants.ADD_INFO;
-import static com.iluwatar.caching.constants.CachingConstants.USER_ID;
-import static com.iluwatar.caching.constants.CachingConstants.USER_ACCOUNT;
-
 /**
  * Implementation of DatabaseManager.
  * implements base methods to work with MongoDb.
@@ -45,7 +45,7 @@ public class MongoDb implements DbManager {
     var iterable = db
             .getCollection(CachingConstants.USER_ACCOUNT)
             .find(new Document(USER_ID, userId));
-        if (iterable.first()==null) {
+    if (iterable.first() == null) {
       return null;
     }
     Document doc = iterable.first();

caching/src/main/java/com/iluwatar/caching/database/VirtualDb.java

@@ -25,6 +25,7 @@ public class VirtualDb implements DbManager {
 
   /**
    * Read from Db.
+   *
    * @param userId {@link String}
    * @return {@link UserAccount}
    */
@@ -38,6 +39,7 @@ public class VirtualDb implements DbManager {
 
   /**
    * Write to DB.
+   *
    * @param userAccount {@link UserAccount}
    * @return {@link UserAccount}
    */
@@ -49,6 +51,7 @@ public class VirtualDb implements DbManager {
 
   /**
    * Update reecord in DB.
+   *
    * @param userAccount {@link UserAccount}
    * @return {@link UserAccount}
    */
@@ -59,6 +62,7 @@ public class VirtualDb implements DbManager {
 
   /**
    * Update.
+   *
    * @param userAccount {@link UserAccount}
    * @return {@link UserAccount}
    */

caching/src/main/java/com/iluwatar/caching/package-info.java

@@ -1,17 +1,14 @@
 /**
  * The MIT License
  * Copyright © 2014-2021 Ilkka Seppälä
- *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
  * in the Software without restriction, including without limitation the rights
  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  * copies of the Software, and to permit persons to whom the Software is
  * furnished to do so, subject to the following conditions:
- *
  * The above copyright notice and this permission notice shall be included in
  * all copies or substantial portions of the Software.
- *
  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE