From f4758569a7accc457cae50c0297cc1dd0535708d Mon Sep 17 00:00:00 2001
From: eugenp <hanriseldon@gmail.com>
Date: Thu, 1 Jan 2015 15:00:28 +0200
Subject: [PATCH] adding alternative to remove nulls for list

---
 .../java/collections/JavaCollectionCleanupUnitTest.java  | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/core-java/src/test/java/org/baeldung/java/collections/JavaCollectionCleanupUnitTest.java b/core-java/src/test/java/org/baeldung/java/collections/JavaCollectionCleanupUnitTest.java
index 85f5d3f009..537262607a 100644
--- a/core-java/src/test/java/org/baeldung/java/collections/JavaCollectionCleanupUnitTest.java
+++ b/core-java/src/test/java/org/baeldung/java/collections/JavaCollectionCleanupUnitTest.java
@@ -4,6 +4,7 @@ import static org.hamcrest.Matchers.hasSize;
 import static org.junit.Assert.assertThat;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 
@@ -29,6 +30,14 @@ public class JavaCollectionCleanupUnitTest {
         assertThat(list, hasSize(1));
     }
 
+    @Test
+    public final void givenListContainsNulls_whenRemovingNullsWithPlainJavaAlternative_thenCorrect() {
+        final List<Integer> list = Lists.newArrayList(null, 1, null);
+        list.removeAll(Collections.singleton(null));
+
+        assertThat(list, hasSize(1));
+    }
+
     @Test
     public final void givenListContainsNulls_whenRemovingNullsWithGuavaV1_thenCorrect() {
         final List<Integer> list = Lists.newArrayList(null, 1, null);