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/App.java

@@ -24,18 +24,16 @@
 package com.iluwatar.nullobject;
 
 /**
- * 
  * Null Object pattern replaces null values with neutral objects. Many times this simplifies
  * algorithms since no extra null checks are needed.
- * <p>
- * In this example we build a binary tree where the nodes are either normal or Null Objects. No null
- * values are used in the tree making the traversal easy.
  *
+ * <p>In this example we build a binary tree where the nodes are either normal or Null Objects. No
+ * null values are used in the tree making the traversal easy.
  */
 public class App {
   /**
-   * Program entry point
-   * 
+   * Program entry point.
+   *
    * @param args command line args
    */
   public static void main(String[] args) {
@@ -44,7 +42,7 @@ public class App {
         new NodeImpl("1", new NodeImpl("11", new NodeImpl("111", NullNode.getInstance(),
             NullNode.getInstance()), NullNode.getInstance()), new NodeImpl("12",
             NullNode.getInstance(), new NodeImpl("122", NullNode.getInstance(),
-                NullNode.getInstance())));
+            NullNode.getInstance())));
 
     root.walk();
   }

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

@@ -24,9 +24,7 @@
 package com.iluwatar.nullobject;
 
 /**
- * 
  * Interface for binary tree node.
- *
  */
 public interface Node {
 

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;

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

@@ -24,17 +24,16 @@
 package com.iluwatar.nullobject;
 
 /**
- * 
  * Null Object implementation for binary tree node.
- * <p>
- * Implemented as Singleton, since all the NullNodes are the same.
  *
+ * <p>Implemented as Singleton, since all the NullNodes are the same.
  */
 public final class NullNode implements Node {
 
   private static NullNode instance = new NullNode();
 
-  private NullNode() {}
+  private NullNode() {
+  }
 
   public static NullNode getInstance() {
     return instance;