📍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>

model-view-presenter/src/test/java/com/iluwatar/model/view/presenter/FileLoaderTest.java

@@ -35,7 +35,7 @@ import org.junit.jupiter.api.Test;
 public class FileLoaderTest {
 
   @Test
-  public void testLoadData() {
+  void testLoadData() {
     final var fileLoader = new FileLoader();
     fileLoader.setFileName("non-existing-file");
     assertNull(fileLoader.loadData());

model-view-presenter/src/test/java/com/iluwatar/model/view/presenter/FileSelectorPresenterTest.java

@@ -67,7 +67,7 @@ public class FileSelectorPresenterTest {
    * Tests if the Presenter was successfully connected with the View.
    */
   @Test
-  public void wiring() {
+  void wiring() {
     presenter.start();
 
     assertNotNull(stub.getPresenter());
@@ -78,7 +78,7 @@ public class FileSelectorPresenterTest {
    * Tests if the name of the file changes.
    */
   @Test
-  public void updateFileNameToLoader() {
+  void updateFileNameToLoader() {
     var expectedFile = "Stamatis";
     stub.setFileName(expectedFile);
 
@@ -93,7 +93,7 @@ public class FileSelectorPresenterTest {
    * empty string.
    */
   @Test
-  public void fileConfirmationWhenNameIsNull() {
+  void fileConfirmationWhenNameIsNull() {
     stub.setFileName(null);
 
     presenter.start();
@@ -108,7 +108,7 @@ public class FileSelectorPresenterTest {
    * Tests if we receive a confirmation when we attempt to open a file that it doesn't exist.
    */
   @Test
-  public void fileConfirmationWhenFileDoesNotExist() {
+  void fileConfirmationWhenFileDoesNotExist() {
     stub.setFileName("RandomName.txt");
 
     presenter.start();
@@ -123,7 +123,7 @@ public class FileSelectorPresenterTest {
    * Tests if we can open the file, when it exists.
    */
   @Test
-  public void fileConfirmationWhenFileExists() {
+  void fileConfirmationWhenFileExists() {
     stub.setFileName("etc/data/test.txt");
     presenter.start();
     presenter.fileNameChanged();
@@ -137,7 +137,7 @@ public class FileSelectorPresenterTest {
    * Tests if the view closes after cancellation.
    */
   @Test
-  public void cancellation() {
+  void cancellation() {
     presenter.start();
     presenter.cancelled();