diff --git a/core-java-9/src/test/java/com/baeldung/java9/language/stream/CollectionFilterUnitTest.java b/core-java-9/src/test/java/com/baeldung/java9/language/stream/CollectionFilterUnitTest.java
index 0a6424fa81..1b9315678a 100644
--- a/core-java-9/src/test/java/com/baeldung/java9/language/stream/CollectionFilterUnitTest.java
+++ b/core-java-9/src/test/java/com/baeldung/java9/language/stream/CollectionFilterUnitTest.java
@@ -18,7 +18,6 @@ public class CollectionFilterUnitTest {
 
     private static final Collection<Integer> BASE_INTEGER_COLLECTION = Arrays.asList(9, 12, 55, 56, 101, 115, 8002, 223, 2668, 19, 8);
     private static final Map<Integer, List<Integer>> EXPECTED_EVEN_FILTERED_AFTER_GROUPING_MAP = createExpectedFilterAfterGroupingMap();
-
     private static Map<Integer, List<Integer>> createExpectedFilterAfterGroupingMap() {
         Map<Integer, List<Integer>> map = new HashMap<>();
         map.put(1, Arrays.asList(8));
@@ -30,7 +29,6 @@ public class CollectionFilterUnitTest {
     }
 
     private static final Map<Integer, List<Integer>> EXPECTED_EVEN_FILTERED_BEFORE_GROUPING_MAP = createExpectedFilterBeforeGroupingMap();
-
     private static Map<Integer, List<Integer>> createExpectedFilterBeforeGroupingMap() {
         Map<Integer, List<Integer>> map = new HashMap<>();
         map.put(1, Arrays.asList(8));
diff --git a/core-java-collections/pom.xml b/core-java-collections/pom.xml
index d63f4d2a45..ff06714bfe 100644
--- a/core-java-collections/pom.xml
+++ b/core-java-collections/pom.xml
@@ -39,12 +39,12 @@
         <dependency>
             <groupId>org.eclipse.collections</groupId>
             <artifactId>eclipse-collections-api</artifactId>
-            <version>9.2.0</version>
+            <version>${eclipse.collections.version}</version>
         </dependency>
         <dependency>
             <groupId>org.eclipse.collections</groupId>
             <artifactId>eclipse-collections</artifactId>
-            <version>9.2.0</version>
+            <version>${eclipse.collections.version}</version>
         </dependency>
         <dependency>
             <groupId>org.assertj</groupId>
@@ -67,5 +67,6 @@
         <collections-generic.version>4.01</collections-generic.version>
         <avaitility.version>1.7.0</avaitility.version>
         <assertj.version>3.6.1</assertj.version>
+        <eclipse.collections.version>9.2.0</eclipse.collections.version>
     </properties>
 </project>
diff --git a/core-java-collections/src/main/java/com/baeldung/java/filtering/CollectionUtilsCollectionFilter.java b/core-java-collections/src/main/java/com/baeldung/java/filtering/CollectionUtilsCollectionFilter.java
index 4d6a3d62fd..58f9f6af54 100644
--- a/core-java-collections/src/main/java/com/baeldung/java/filtering/CollectionUtilsCollectionFilter.java
+++ b/core-java-collections/src/main/java/com/baeldung/java/filtering/CollectionUtilsCollectionFilter.java
@@ -8,13 +8,7 @@ import org.apache.commons.collections4.Predicate;
 public class CollectionUtilsCollectionFilter {
 
     static public Collection<Integer> findEvenNumbers(Collection<Integer> baseCollection) {
-        Predicate<Integer> apacheEventNumberPredicate = new Predicate<Integer>() {
-
-            @Override
-            public boolean evaluate(Integer object) {
-                return object % 2 == 0;
-            }
-        };
+        Predicate<Integer> apacheEventNumberPredicate = item -> item % 2 == 0;
 
         CollectionUtils.filter(baseCollection, apacheEventNumberPredicate);
         return baseCollection;
diff --git a/core-java-collections/src/main/java/com/baeldung/java/filtering/GuavaCollectionFilter.java b/core-java-collections/src/main/java/com/baeldung/java/filtering/GuavaCollectionFilter.java
index f5a27f0bdb..88338fd6d4 100644
--- a/core-java-collections/src/main/java/com/baeldung/java/filtering/GuavaCollectionFilter.java
+++ b/core-java-collections/src/main/java/com/baeldung/java/filtering/GuavaCollectionFilter.java
@@ -8,13 +8,8 @@ import com.google.common.collect.Collections2;
 public class GuavaCollectionFilter {
 
     static public Collection<Integer> findEvenNumbers(Collection<Integer> baseCollection) {
-        Predicate<Integer> guavaPredicate = new Predicate<Integer>() {
+        Predicate<Integer> guavaPredicate = item -> item % 2 == 0;
 
-            @Override
-            public boolean apply(Integer input) {
-                return input % 2 == 0;
-            }
-        };
         Collection<Integer> filteredCollection = Collections2.filter(baseCollection, guavaPredicate);
         return filteredCollection;
     }
diff --git a/core-java-collections/src/main/java/com/baeldung/java/filtering/StreamsCollectionFilter.java b/core-java-collections/src/main/java/com/baeldung/java/filtering/StreamsCollectionFilter.java
index d51283de55..f074f74199 100644
--- a/core-java-collections/src/main/java/com/baeldung/java/filtering/StreamsCollectionFilter.java
+++ b/core-java-collections/src/main/java/com/baeldung/java/filtering/StreamsCollectionFilter.java
@@ -16,22 +16,11 @@ public class StreamsCollectionFilter {
         return filterCollectionHelperMethod(baseCollection, item -> item % 2 == 0);
     }
 
-    static public Collection<Integer> findEvenNumbersUsingLambda(Collection<Integer> baseCollection) {
-        return baseCollection.stream()
-            .filter(item -> item % 2 == 0)
-            .collect(Collectors.toList());
-    }
-
-    static public Collection<Integer> findEvenNumbersUsingPredicate(Collection<Integer> baseCollection) {
-        Predicate<Integer> evenNumberPredicate = new Predicate<Integer>() {
-            @Override
-            public boolean test(Integer i) {
-                return i % 2 == 0;
-            }
-        };
+    static public Collection<Integer> findEvenNumbers(Collection<Integer> baseCollection) {
+        Predicate<Integer> streamsPredicate = item -> item % 2 == 0;
 
         return baseCollection.stream()
-            .filter(evenNumberPredicate)
+            .filter(streamsPredicate)
             .collect(Collectors.toList());
     }
 }
diff --git a/core-java-collections/src/test/java/com/baeldung/java/filtering/CollectionFiltersUnitTest.java b/core-java-collections/src/test/java/com/baeldung/java/filtering/CollectionFiltersUnitTest.java
index c85b7a526d..b30805d471 100644
--- a/core-java-collections/src/test/java/com/baeldung/java/filtering/CollectionFiltersUnitTest.java
+++ b/core-java-collections/src/test/java/com/baeldung/java/filtering/CollectionFiltersUnitTest.java
@@ -27,15 +27,13 @@ public class CollectionFiltersUnitTest {
 
     @Test
     public void givenAnIntegerCollection_whenFilteringEvenValues_thenObtainTheFilteredCollectionForAllCases() {
-        Collection<Integer> filteredWithStreams1 = StreamsCollectionFilter.findEvenNumbersUsingLambda(BASE_INTEGER_COLLECTION);
-        Collection<Integer> filteredWithStreams2 = StreamsCollectionFilter.findEvenNumbersUsingPredicate(BASE_INTEGER_COLLECTION);
+        Collection<Integer> filteredWithStreams1 = StreamsCollectionFilter.findEvenNumbers(BASE_INTEGER_COLLECTION);
         Collection<Integer> filteredWithCollectionUtils = CollectionUtilsCollectionFilter.findEvenNumbers(new ArrayList<>(BASE_INTEGER_COLLECTION));
         Collection<Integer> filteredWithEclipseCollections = EclipseCollectionsCollectionFilter.findEvenNumbers(BASE_INTEGER_COLLECTION);
         Collection<Integer> filteredWithEclipseCollectionsUsingIterate = EclipseCollectionsCollectionFilter.findEvenNumbersUsingIterate(BASE_INTEGER_COLLECTION);
         Collection<Integer> filteredWithGuava = GuavaCollectionFilter.findEvenNumbers(BASE_INTEGER_COLLECTION);
 
-        assertThat(filteredWithStreams1).hasSameElementsAs(filteredWithStreams2)
-            .hasSameElementsAs(filteredWithCollectionUtils)
+        assertThat(filteredWithStreams1).hasSameElementsAs(filteredWithCollectionUtils)
             .hasSameElementsAs(filteredWithEclipseCollections)
             .hasSameElementsAs(filteredWithEclipseCollectionsUsingIterate)
             .hasSameElementsAs(filteredWithEclipseCollectionsUsingIterate)