📍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>

fluentinterface/src/test/java/com/iluwatar/fluentinterface/fluentiterable/FluentIterableTest.java

@@ -53,7 +53,7 @@ public abstract class FluentIterableTest {
   protected abstract FluentIterable<Integer> createFluentIterable(final Iterable<Integer> integers);
 
   @Test
-  public void testFirst() {
+  void testFirst() {
     final var integers = List.of(1, 2, 3, 10, 9, 8);
     final var first = createFluentIterable(integers).first();
     assertNotNull(first);
@@ -62,7 +62,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testFirstEmptyCollection() {
+  void testFirstEmptyCollection() {
     final var integers = Collections.<Integer>emptyList();
     final var first = createFluentIterable(integers).first();
     assertNotNull(first);
@@ -70,7 +70,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testFirstCount() {
+  void testFirstCount() {
     final var integers = List.of(1, 2, 3, 10, 9, 8);
     final var first4 = createFluentIterable(integers)
         .first(4)
@@ -86,7 +86,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testFirstCountLessItems() {
+  void testFirstCountLessItems() {
     final var integers = List.of(1, 2, 3);
     final var first4 = createFluentIterable(integers)
         .first(4)
@@ -101,7 +101,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testLast() {
+  void testLast() {
     final var integers = List.of(1, 2, 3, 10, 9, 8);
     final var last = createFluentIterable(integers).last();
     assertNotNull(last);
@@ -110,7 +110,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testLastEmptyCollection() {
+  void testLastEmptyCollection() {
     final var integers = Collections.<Integer>emptyList();
     final var last = createFluentIterable(integers).last();
     assertNotNull(last);
@@ -118,7 +118,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testLastCount() {
+  void testLastCount() {
     final var integers = List.of(1, 2, 3, 10, 9, 8);
     final var last4 = createFluentIterable(integers)
         .last(4)
@@ -133,7 +133,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testLastCountLessItems() {
+  void testLastCountLessItems() {
     final var integers = List.of(1, 2, 3);
     final var last4 = createFluentIterable(integers)
         .last(4)
@@ -148,7 +148,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testFilter() {
+  void testFilter() {
     final var integers = List.of(1, 2, 3, 10, 9, 8);
     final var evenItems = createFluentIterable(integers)
         .filter(i -> i % 2 == 0)
@@ -162,7 +162,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testMap() {
+  void testMap() {
     final var integers = List.of(1, 2, 3);
     final var longs = createFluentIterable(integers)
         .map(Integer::longValue)
@@ -176,7 +176,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testForEach() {
+  void testForEach() {
     final var integers = List.of(1, 2, 3);
 
     final Consumer<Integer> consumer = mock(Consumer.class);
@@ -190,7 +190,7 @@ public abstract class FluentIterableTest {
   }
 
   @Test
-  public void testSpliterator() throws Exception {
+  void testSpliterator() throws Exception {
     final var integers = List.of(1, 2, 3);
     final var split = createFluentIterable(integers).spliterator();
     assertNotNull(split);

fluentinterface/src/test/java/com/iluwatar/fluentinterface/fluentiterable/lazy/LazyFluentIterableTest.java

@@ -31,7 +31,7 @@ import com.iluwatar.fluentinterface.fluentiterable.FluentIterableTest;
  *
  * @author Jeroen Meulemeester
  */
-public class LazyFluentIterableTest extends FluentIterableTest {
+class LazyFluentIterableTest extends FluentIterableTest {
 
   @Override
   protected FluentIterable<Integer> createFluentIterable(Iterable<Integer> integers) {

fluentinterface/src/test/java/com/iluwatar/fluentinterface/fluentiterable/simple/SimpleFluentIterableTest.java

@@ -31,7 +31,7 @@ import com.iluwatar.fluentinterface.fluentiterable.FluentIterableTest;
  *
  * @author Jeroen Meulemeester
  */
-public class SimpleFluentIterableTest extends FluentIterableTest {
+class SimpleFluentIterableTest extends FluentIterableTest {
 
   @Override
   protected FluentIterable<Integer> createFluentIterable(Iterable<Integer> integers) {