diff --git a/core-java-modules/core-java-collections-list-6/pom.xml b/core-java-modules/core-java-collections-list-6/pom.xml
index 18a153ff06..06e00e8dce 100644
--- a/core-java-modules/core-java-collections-list-6/pom.xml
+++ b/core-java-modules/core-java-collections-list-6/pom.xml
@@ -29,4 +29,4 @@
0.10.4
-
\ No newline at end of file
+
diff --git a/core-java-modules/core-java-collections-list-6/src/test/java/com/baeldung/modifyandprint/ModifyAndPrintListElementsUnitTest.java b/core-java-modules/core-java-collections-list-6/src/test/java/com/baeldung/modifyandprint/ModifyAndPrintListElementsUnitTest.java
new file mode 100644
index 0000000000..7d82873103
--- /dev/null
+++ b/core-java-modules/core-java-collections-list-6/src/test/java/com/baeldung/modifyandprint/ModifyAndPrintListElementsUnitTest.java
@@ -0,0 +1,56 @@
+package com.baeldung.modifyandprint;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.List;
+import java.util.stream.Collectors;
+
+import org.junit.jupiter.api.Test;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.common.collect.Lists;
+
+public class ModifyAndPrintListElementsUnitTest {
+
+ private final Logger log = LoggerFactory.getLogger(ModifyAndPrintListElementsUnitTest.class);
+
+ @Test
+ void whenPrintingInForEach_thenListIsPrinted() {
+ List theList = Lists.newArrayList("Kai", "Liam", "Eric", "Kevin");
+ theList.forEach(e -> log.info(e));
+ }
+
+ @Test
+ void whenUsingModifyAndPrintingSeparately_thenListIsModifiedAndPrinted() {
+ List theList = Lists.newArrayList("Kai", "Liam", "Eric", "Kevin");
+ theList.replaceAll(e -> e.toUpperCase());
+ theList.forEach(e -> log.info(e));
+ assertEquals(List.of("KAI", "LIAM", "ERIC", "KEVIN"), theList);
+ }
+
+ @Test
+ void whenPrintingInMap_thenStreamIsModifiedAndPrinted() {
+ List theList = List.of("Kai", "Liam", "Eric", "Kevin");
+ List newList = theList.stream()
+ .map(e -> {
+ String newElement = e.toUpperCase();
+ log.info(newElement);
+ return newElement;
+ })
+ .filter(e -> e.length() == 4)
+ .collect(Collectors.toList());
+ assertEquals(List.of("LIAM", "ERIC"), newList);
+ }
+
+ @Test
+ void whenPrintingInPeek_thenStreamIsModifiedAndPrinted() {
+ List theList = List.of("Kai", "Liam", "Eric", "Kevin");
+ List newList = theList.stream()
+ .map(e -> e.toUpperCase())
+ .peek(e -> log.info(e))
+ .filter(e -> e.length() == 4)
+ .collect(Collectors.toList());
+ assertEquals(List.of("LIAM", "ERIC"), newList);
+ }
+}
\ No newline at end of file