📍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>

retry/src/test/java/com/iluwatar/retry/FindCustomerTest.java

@@ -34,22 +34,20 @@ import org.junit.jupiter.api.Test;
  *
  * @author George Aristy (george.aristy@gmail.com)
  */
-public class FindCustomerTest {
+class FindCustomerTest {
   /**
    * Returns the given result with no exceptions.
    */
   @Test
-  public void noExceptions() throws Exception {
+  void noExceptions() throws Exception {
     assertThat(new FindCustomer("123").perform(), is("123"));
   }
 
   /**
    * Throws the given exception.
-   *
-   * @throws Exception the expected exception
    */
   @Test
-  public void oneException() {
+  void oneException() {
     var findCustomer = new FindCustomer("123", new BusinessException("test"));
     assertThrows(BusinessException.class, findCustomer::perform);
   }
@@ -60,7 +58,7 @@ public class FindCustomerTest {
    * @throws Exception not an expected exception
    */
   @Test
-  public void resultAfterExceptions() throws Exception {
+  void resultAfterExceptions() throws Exception {
     final var op = new FindCustomer(
         "123",
         new CustomerNotFoundException("not found"),

retry/src/test/java/com/iluwatar/retry/RetryExponentialBackoffTest.java

@@ -34,12 +34,12 @@ import org.junit.jupiter.api.Test;
  *
  * @author George Aristy (george.aristy@gmail.com)
  */
-public class RetryExponentialBackoffTest {
+class RetryExponentialBackoffTest {
   /**
    * Should contain all errors thrown.
    */
   @Test
-  public void errors() {
+  void errors() {
     final var e = new BusinessException("unhandled");
     final var retry = new RetryExponentialBackoff<String>(
         () -> {
@@ -62,7 +62,7 @@ public class RetryExponentialBackoffTest {
    * it to attempt twice.
    */
   @Test
-  public void attempts() {
+  void attempts() {
     final var e = new BusinessException("unhandled");
     final var retry = new RetryExponentialBackoff<String>(
         () -> {
@@ -85,7 +85,7 @@ public class RetryExponentialBackoffTest {
    * it to ignore the exception that will be thrown.
    */
   @Test
-  public void ignore() {
+  void ignore() {
     final var e = new CustomerNotFoundException("customer not found");
     final var retry = new RetryExponentialBackoff<String>(
         () -> {

retry/src/test/java/com/iluwatar/retry/RetryTest.java

@@ -34,12 +34,13 @@ import org.junit.jupiter.api.Test;
  *
  * @author George Aristy (george.aristy@gmail.com)
  */
-public class RetryTest {
+class RetryTest {
+
   /**
    * Should contain all errors thrown.
    */
   @Test
-  public void errors() {
+  void errors() {
     final var e = new BusinessException("unhandled");
     final var retry = new Retry<String>(
         () -> {
@@ -62,7 +63,7 @@ public class RetryTest {
    * it to attempt twice.
    */
   @Test
-  public void attempts() {
+  void attempts() {
     final var e = new BusinessException("unhandled");
     final var retry = new Retry<String>(
         () -> {
@@ -85,7 +86,7 @@ public class RetryTest {
    * it to ignore the exception that will be thrown.
    */
   @Test
-  public void ignore() {
+  void ignore() {
     final var e = new CustomerNotFoundException("customer not found");
     final var retry = new Retry<String>(
         () -> {