📍Use lombok, reformat, and optimize the code (#1560)

* Use lombok, reformat, and optimize the code

* Fix merge conflicts and some sonar issues

Co-authored-by: va1m <va1m@email.com>

step-builder/src/main/java/com/iluwatar/stepbuilder/App.java

@@ -23,8 +23,7 @@
 
 package com.iluwatar.stepbuilder;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * Step Builder Pattern
@@ -56,10 +55,9 @@ import org.slf4j.LoggerFactory;
  *
  * @see <a href="http://rdafbn.blogspot.co.uk/2012/07/step-builder-pattern_28.html">http://rdafbn.blogspot.co.uk/2012/07/step-builder-pattern_28.html</a>
  */
+@Slf4j
 public class App {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
-
   /**
    * Program entry point.
    *

step-builder/src/test/java/com/iluwatar/stepbuilder/CharacterStepBuilderTest.java

@@ -41,7 +41,7 @@ public class CharacterStepBuilderTest {
    * Build a new wizard {@link Character} and verify if it has the expected attributes
    */
   @Test
-  public void testBuildWizard() {
+  void testBuildWizard() {
     final var character = CharacterStepBuilder.newBuilder()
         .name("Merlin")
         .wizardClass("alchemist")
@@ -69,7 +69,7 @@ public class CharacterStepBuilderTest {
    * expected attributes
    */
   @Test
-  public void testBuildPoorWizard() {
+  void testBuildPoorWizard() {
     final var character = CharacterStepBuilder.newBuilder()
         .name("Merlin")
         .wizardClass("alchemist")
@@ -88,7 +88,7 @@ public class CharacterStepBuilderTest {
    * Build a new wizard {@link Character} and verify if it has the expected attributes
    */
   @Test
-  public void testBuildWeakWizard() {
+  void testBuildWeakWizard() {
     final var character = CharacterStepBuilder.newBuilder()
         .name("Merlin")
         .wizardClass("alchemist")
@@ -104,12 +104,11 @@ public class CharacterStepBuilderTest {
 
   }
 
-
   /**
    * Build a new warrior {@link Character} and verify if it has the expected attributes
    */
   @Test
-  public void testBuildWarrior() {
+  void testBuildWarrior() {
     final var character = CharacterStepBuilder.newBuilder()
         .name("Cuauhtemoc")
         .fighterClass("aztec")
@@ -137,7 +136,7 @@ public class CharacterStepBuilderTest {
    * expected attributes
    */
   @Test
-  public void testBuildPoorWarrior() {
+  void testBuildPoorWarrior() {
     final var character = CharacterStepBuilder.newBuilder()
         .name("Poor warrior")
         .fighterClass("none")
@@ -157,7 +156,7 @@ public class CharacterStepBuilderTest {
    * has the expected attributes
    */
   @Test
-  public void testBuildWeakWarrior() {
+  void testBuildWeakWarrior() {
     final var character = CharacterStepBuilder.newBuilder()
         .name("Weak warrior")
         .fighterClass("none")