diff --git a/core-java-modules/core-java-streams-4/src/main/java/com/baeldung/streams/intarraytostrings/ArrayConversionUtils.java b/core-java-modules/core-java-streams-4/src/main/java/com/baeldung/streams/intarraytostrings/ArrayConversionUtils.java
new file mode 100644
index 0000000000..3bb58b43d2
--- /dev/null
+++ b/core-java-modules/core-java-streams-4/src/main/java/com/baeldung/streams/intarraytostrings/ArrayConversionUtils.java
@@ -0,0 +1,43 @@
+package com.baeldung.streams.intarraytostrings;
+
+import java.util.Arrays;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+import java.util.stream.Stream;
+
+public class ArrayConversionUtils {
+
+    public static void createStreamExample() {
+        int[] intArray = { 1, 2, 3, 4, 5 };
+        IntStream intStream = Arrays.stream(intArray);
+
+        Integer[] integerArray = { 1, 2, 3, 4, 5 };
+        Stream<Integer> integerStream = Arrays.stream(integerArray);
+    }
+
+    public static String[] convertToStringArray(Integer[] input) {
+        return Arrays.stream(input)
+          .map(Object::toString)
+          .toArray(String[]::new);
+    }
+
+    public static String[] convertToStringArray(int[] input) {
+        return Arrays.stream(input)
+          .mapToObj(Integer::toString)
+          .toArray(String[]::new);
+    }
+
+    public static String[] convertToStringArrayWithBoxing(int[] input) {
+        return Arrays.stream(input)
+          .boxed()
+          .map(Object::toString)
+          .toArray(String[]::new);
+    }
+
+    public static String convertToString(int[] input){
+        return Arrays.stream(input)
+          .mapToObj(Integer::toString)
+          .collect(Collectors.joining(", "));
+    }
+
+}
diff --git a/core-java-modules/core-java-streams-4/src/test/java/com/baeldung/streams/intarraytostrings/IntArrayToStringUnitTest.java b/core-java-modules/core-java-streams-4/src/test/java/com/baeldung/streams/intarraytostrings/IntArrayToStringUnitTest.java
new file mode 100644
index 0000000000..3f6fb0be8e
--- /dev/null
+++ b/core-java-modules/core-java-streams-4/src/test/java/com/baeldung/streams/intarraytostrings/IntArrayToStringUnitTest.java
@@ -0,0 +1,52 @@
+package com.baeldung.streams.intarraytostrings;
+
+import static com.baeldung.streams.intarraytostrings.ArrayConversionUtils.convertToString;
+import static com.baeldung.streams.intarraytostrings.ArrayConversionUtils.convertToStringArray;
+import static com.baeldung.streams.intarraytostrings.ArrayConversionUtils.convertToStringArrayWithBoxing;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+public class IntArrayToStringUnitTest {
+
+    @Test
+    public void whenConvertingIntegers_thenHandleStreamOfIntegers() {
+        Integer[] integerNumbers = { 1, 2, 3, 4, 5 };
+        String[] expectedOutput = { "1", "2", "3", "4", "5" };
+
+        String[] strings = convertToStringArray(integerNumbers);
+
+        Assert.assertArrayEquals(expectedOutput, strings);
+    }
+
+    @Test
+    public void whenConvertingInts_thenHandleIntStream() {
+        int[] intNumbers = { 1, 2, 3, 4, 5 };
+        String[] expectedOutput = { "1", "2", "3", "4", "5" };
+
+        String[] strings = convertToStringArray(intNumbers);
+
+        Assert.assertArrayEquals(expectedOutput, strings);
+    }
+
+    @Test
+    public void givenAnIntArray_whenBoxingToInteger_thenHandleStreamOfIntegers() {
+        int[] intNumbers = { 1, 2, 3, 4, 5 };
+        String[] expectedOutput = { "1", "2", "3", "4", "5" };
+
+        String[] strings = convertToStringArrayWithBoxing(intNumbers);
+
+        Assert.assertArrayEquals(expectedOutput, strings);
+    }
+
+    @Test
+    public void givenAnIntArray_whenUsingCollectorsJoining_thenReturnCommaSeparatedString(){
+        int[] intNumbers = { 1, 2, 3, 4, 5 };
+        String expectedOutput = "1, 2, 3, 4, 5";
+
+        String string = convertToString(intNumbers);
+
+        Assert.assertEquals(expectedOutput, string);
+    }
+
+}