dependencies: #2449 bump maven-checkstyle-plugin from 3.1.0 to 3.2.0 + resolve chec… (#2464)

* #2449 bump maven-checkstyle-plugin from 3.1.0 to 3.2.0 + resolve checkstyle issues

* remove FileSelectorJFrame.java to resolve checkstyle issue

* remove FileSelectorJFrame.java to resolve checkstyle issue

* remove FileSelectorJFrame.java to resolve checkstyle issue

* add refactored file with correct filename to resolve checkstyle issue

* add the test data

* change filenames from JFrame to Jframe for checkstyle

* fix code smell from  sonar report

* add new testcases to improve the test coverage

* remove code smell

parameter-object/src/main/java/com/iluwatar/parameter/object/ParameterObject.java

@@ -24,6 +24,9 @@
  */
 package com.iluwatar.parameter.object;
 
+/**
+ * ParameterObject.
+ */
 public class ParameterObject {
 
   /**
@@ -83,6 +86,9 @@ public class ParameterObject {
         type, sortBy, sortOrder);
   }
 
+  /**
+   * Builder for ParameterObject.
+   */
   public static final class Builder {
 
     private String type;

parameter-object/src/main/java/com/iluwatar/parameter/object/SearchService.java

@@ -24,6 +24,9 @@
  */
 package com.iluwatar.parameter.object;
 
+/**
+ * SearchService to demonstrate parameter object pattern.
+ */
 public class SearchService {
 
   /**

parameter-object/src/main/java/com/iluwatar/parameter/object/SortOrder.java

@@ -24,6 +24,9 @@
  */
 package com.iluwatar.parameter.object;
 
+/**
+ * enum for sort order types.
+ */
 public enum SortOrder {
   ASC("asc"),
   DESC("desc");