[BAEL-6708] Address review comments

core-java-modules/core-java-collections-set-2/src/main/java/com/baeldung/cartesianproduct/CartesianProduct.java

@@ -9,7 +9,6 @@ import java.util.stream.Stream;
 import com.google.common.collect.Sets;
 
 public class CartesianProduct {
-    // Responsible for calculating Cartesian Product using iterative approach.
     public List<List<Object>> getCartesianProductIterative(List<List<Object>> sets) {
         List<List<Object>> result = new ArrayList<>();
         if(sets == null || sets.isEmpty()) {
@@ -31,14 +30,12 @@ public class CartesianProduct {
         return result;
     }
 
-    // Responsible for calculating Cartesian Product using recursive approach.
     public List<List<Object>> getCartesianProductRecursive(List<List<Object>> sets) {
         List<List<Object>> result = new ArrayList<>();
         getCartesianProductRecursiveHelper(sets, 0, new ArrayList<>(), result);
         return result;
     }
 
-    // Helper method for recursive approach
     private void getCartesianProductRecursiveHelper(List<List<Object>> sets, int index, List<Object> current, List<List<Object>> result) {
         if(index == sets.size()) {
             result.add(new ArrayList<>(current));
@@ -52,12 +49,10 @@ public class CartesianProduct {
         }
     }
 
-    // Responsible for calculating Cartesian Product using streams.
     public List<List<Object>> getCartesianProductUsingStreams(List<List<Object>> sets) {
         return cartesianProduct(sets,0).collect(Collectors.toList());
     }
 
-    // Helper method for streams approach.
     public Stream<List<Object>> cartesianProduct(List<List<Object>> sets, int index) {
         if(index == sets.size()) {
             List<Object> emptyList = new ArrayList<>();
@@ -71,7 +66,6 @@ public class CartesianProduct {
             }));
     }
 
-    // Responsible for calculating Cartesian Product using Guava library.
     public List<List<Object>> getCartesianProductUsingGuava(List<Set<Object>> sets) {
         Set<List<Object>> cartesianProduct = Sets.cartesianProduct(sets);
         List<List<Object>> cartesianList = new ArrayList<>(cartesianProduct);

core-java-modules/core-java-collections-set-2/src/test/java/com/baeldung/cartesianproduct/CartesianProductUnitTest.java

@@ -19,7 +19,7 @@ public class CartesianProductUnitTest {
     );
 
     @Test
-    public void shouldCalculateCartesianProductUsingStreams() {
+    public void whenUsingStreams_thenCalculateCartesianProduct() {
         List<List<Object>> expected = Arrays.asList(
             Arrays.asList(10, "John", 'I'),
             Arrays.asList(10, "John", 'J'),
@@ -30,13 +30,13 @@ public class CartesianProductUnitTest {
             Arrays.asList(20, "Jack", 'I'),
             Arrays.asList(20, "Jack", 'J')
         );
-
         List<List<Object>> cartesianProduct = cp.getCartesianProductUsingStreams(sets);
+
         assertEquals(expected, cartesianProduct);
     }
 
     @Test
-    public void shouldCalculateCartesianProductUsingRecursion() {
+    public void whenUsingRecursion_thenCalculateCartesianProduct() {
         List<List<Object>> expected = Arrays.asList(
             Arrays.asList(10, "John", 'I'),
             Arrays.asList(10, "John", 'J'),
@@ -47,13 +47,13 @@ public class CartesianProductUnitTest {
             Arrays.asList(20, "Jack", 'I'),
             Arrays.asList(20, "Jack", 'J')
         );
-
         List<List<Object>> cartesianProduct = cp.getCartesianProductRecursive(sets);
+
         assertEquals(expected, cartesianProduct);
     }
 
     @Test
-    public void shouldCalculateCartesianProductUsingIterativeApproach() {
+    public void whenUsingIterativeApproach_thenCalculateCartesianProduct() {
         List<List<Object>> expected = Arrays.asList(
             Arrays.asList(20, "Jack", 'J'),
             Arrays.asList(10, "Jack", 'J'),
@@ -64,13 +64,13 @@ public class CartesianProductUnitTest {
             Arrays.asList(20, "John", 'I'),
             Arrays.asList(10, "John", 'I')
         );
-
         List<List<Object>> cartesianProduct = cp.getCartesianProductIterative(sets);
+
         assertEquals(expected, cartesianProduct);
     }
 
     @Test
-    public void shouldCalculateCartesianProductUsingGuava() {
+    public void whenUsingGuava_thenCalculateCartesianProduct() {
         List<Set<Object>> sets = new ArrayList<>();
         sets.add(new HashSet<>(Arrays.asList(10, 20)));
         sets.add(new HashSet<>(Arrays.asList("John", "Jack")));
@@ -86,8 +86,8 @@ public class CartesianProductUnitTest {
             Arrays.asList(10, "Jack", 'I'),
             Arrays.asList(10, "Jack", 'J')
         );
-
         List<List<Object>> cartesianProduct = cp.getCartesianProductUsingGuava(sets);
+
         assertEquals(expected, cartesianProduct);
     }
 }