📍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>

eip-aggregator/pom.xml

@@ -61,11 +61,6 @@
         </dependency>
 
         <!-- Testing -->
-        <dependency>
-            <groupId>com.github.sbrannen</groupId>
-            <artifactId>spring-test-junit5</artifactId>
-            <scope>test</scope>
-        </dependency>
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-engine</artifactId>

eip-aggregator/src/test/java/com/iluwatar/eip/aggregator/routes/AggregatorRouteTest.java

@@ -49,7 +49,7 @@ import org.springframework.test.context.junit.jupiter.SpringExtension;
 @ActiveProfiles("test")
 @EnableAutoConfiguration
 @ComponentScan
-public class AggregatorRouteTest {
+class AggregatorRouteTest {
 
   @EndpointInject(uri = "{{entry}}")
   private ProducerTemplate entry;
@@ -64,7 +64,7 @@ public class AggregatorRouteTest {
    */
   @Test
   @DirtiesContext
-  public void testSplitter() throws Exception {
+  void testSplitter() throws Exception {
 
     // Three items in one entry message
     entry.sendBody("TEST1");

eip-aggregator/src/test/java/com/iluwatar/eip/aggregator/routes/MessageAggregationStrategyTest.java

@@ -32,10 +32,10 @@ import org.junit.jupiter.api.Test;
 /**
  * Tests MessageAggregationStrategy
  */
-public class MessageAggregationStrategyTest {
+class MessageAggregationStrategyTest {
 
   @Test
-  public void testAggregate() {
+  void testAggregate() {
     var mas = new MessageAggregationStrategy();
     var oldExchange = new DefaultExchange((CamelContext) null);
     oldExchange.getIn().setBody("TEST1");
@@ -49,7 +49,7 @@ public class MessageAggregationStrategyTest {
   }
 
   @Test
-  public void testAggregateOldNull() {
+  void testAggregateOldNull() {
     var mas = new MessageAggregationStrategy();
 
     var newExchange = new DefaultExchange((CamelContext) null);