Resolves checkstyle errors for naked-objects null-object object-mother object-pool observer queue-load-leveling (#1082)

* Reduces checkstyle errors in naked-objects

* Reduces checkstyle errors in null-object

* Reduces checkstyle errors in object-mother

* Reduces checkstyle errors in object-pool

* Reduces checkstyle errors in observer

* Reduces checkstyle errors in queue-load-leveling

null-object/src/main/java/com/iluwatar/nullobject/NodeImpl.java

@@ -27,9 +27,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * 
  * Implementation for binary tree's normal nodes.
- *
  */
 public class NodeImpl implements Node {
 
@@ -40,7 +38,7 @@ public class NodeImpl implements Node {
   private final Node right;
 
   /**
-   * Constructor
+   * Constructor.
    */
   public NodeImpl(String name, Node left, Node right) {
     this.name = name;