📍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>

reader-writer-lock/src/test/java/com/iluwatar/reader/writer/lock/ReaderAndWriterTest.java

@@ -37,7 +37,7 @@ import org.slf4j.LoggerFactory;
 /**
  * @author hongshuwei@gmail.com
  */
-public class ReaderAndWriterTest {
+class ReaderAndWriterTest {
 
   private InMemoryAppender appender;
 
@@ -57,7 +57,7 @@ public class ReaderAndWriterTest {
    * Verify reader and writer can only get the lock to read and write orderly
    */
   @Test
-  public void testReadAndWrite() throws Exception {
+  void testReadAndWrite() throws Exception {
 
     var lock = new ReaderWriterLock();
 
@@ -87,7 +87,7 @@ public class ReaderAndWriterTest {
    * Verify reader and writer can only get the lock to read and write orderly
    */
   @Test
-  public void testWriteAndRead() throws Exception {
+  void testWriteAndRead() throws Exception {
 
     var executeService = Executors.newFixedThreadPool(2);
     var lock = new ReaderWriterLock();

reader-writer-lock/src/test/java/com/iluwatar/reader/writer/lock/ReaderTest.java

@@ -38,7 +38,7 @@ import org.slf4j.LoggerFactory;
 /**
  * @author hongshuwei@gmail.com
  */
-public class ReaderTest {
+class ReaderTest {
 
   private InMemoryAppender appender;
 
@@ -58,7 +58,7 @@ public class ReaderTest {
    * Verify that multiple readers can get the read lock concurrently
    */
   @Test
-  public void testRead() throws Exception {
+  void testRead() throws Exception {
 
     var executeService = Executors.newFixedThreadPool(2);
     var lock = new ReaderWriterLock();

reader-writer-lock/src/test/java/com/iluwatar/reader/writer/lock/WriterTest.java

@@ -38,7 +38,7 @@ import org.slf4j.LoggerFactory;
 /**
  * @author hongshuwei@gmail.com
  */
-public class WriterTest {
+class WriterTest {
 
   private InMemoryAppender appender;
 
@@ -58,7 +58,7 @@ public class WriterTest {
    * Verify that multiple writers will get the lock in order.
    */
   @Test
-  public void testWrite() throws Exception {
+  void testWrite() throws Exception {
 
     var executeService = Executors.newFixedThreadPool(2);
     var lock = new ReaderWriterLock();