refactor: remove code smell java:S5786 (#2159)

https://sonarcloud.io/organizations/iluwatar/rules?open=java%3AS5786&rule_key=java%3AS5786

parameter-object/src/test/java/com/iluwatar/parameter/object/ParameterObjectTest.java

@@ -35,7 +35,7 @@ class ParameterObjectTest {
   private static final Logger LOGGER = LoggerFactory.getLogger(ParameterObjectTest.class);
 
   @Test
-  public void testForDefaultSortBy() {
+  void testForDefaultSortBy() {
     //Creating parameter object with default value for SortBy set
     ParameterObject params = ParameterObject.newBuilder()
         .withType("sneakers")
@@ -49,7 +49,7 @@ class ParameterObjectTest {
   }
 
   @Test
-  public void testForDefaultSortOrder() {
+  void testForDefaultSortOrder() {
     //Creating parameter object with default value for SortOrder set
     ParameterObject params = ParameterObject.newBuilder()
         .withType("sneakers")

parameter-object/src/test/java/com/iluwatar/parameter/object/SearchServiceTest.java

@@ -37,7 +37,7 @@ class SearchServiceTest {
   private SearchService searchService;
 
   @BeforeEach
-  public void setUp() {
+  void setUp() {
     //Creating parameter object with default values set
     parameterObject = ParameterObject.newBuilder()
         .withType("sneakers")
@@ -50,7 +50,7 @@ class SearchServiceTest {
    *  Testing parameter object against the overloaded method to verify if the behaviour is same.
    */
   @Test
-  public void testDefaultParametersMatch() {
+  void testDefaultParametersMatch() {
     assertEquals(searchService.search(parameterObject), searchService.search("sneakers",
         SortOrder.ASC), "Default Parameter values do not not match.");
     LOGGER.info("SortBy Default parameter value matches.");