diff --git a/core-java-arrays/src/main/java/com/baeldung/array/AddElementToEndOfArray.java b/core-java-arrays/src/main/java/com/baeldung/array/AddElementToEndOfArray.java
index 1dc6600600..dcd61cdfa7 100644
--- a/core-java-arrays/src/main/java/com/baeldung/array/AddElementToEndOfArray.java
+++ b/core-java-arrays/src/main/java/com/baeldung/array/AddElementToEndOfArray.java
@@ -8,7 +8,7 @@ public class AddElementToEndOfArray {
     public Integer[] addElementUsingArraysCopyOf(Integer[] srcArray, int elementToAdd) {
         Integer[] destArray = Arrays.copyOf(srcArray, srcArray.length + 1);
 
-        destArray[destArray.length-1] = elementToAdd;
+        destArray[destArray.length - 1] = elementToAdd;
         return destArray;
     }
 
@@ -26,9 +26,9 @@ public class AddElementToEndOfArray {
 
         System.arraycopy(srcArray, 0, destArray, 0, srcArray.length);
 
-        destArray[destArray.length-1] = elementToAdd;
+        destArray[destArray.length - 1] = elementToAdd;
 
         return destArray;
     }
 
-}
\ No newline at end of file
+}
diff --git a/core-java-arrays/src/test/java/com/baeldung/array/AddElementToEndOfArrayUnitTest.java b/core-java-arrays/src/test/java/com/baeldung/array/AddElementToEndOfArrayUnitTest.java
index beeed1a313..f6f1f954f6 100644
--- a/core-java-arrays/src/test/java/com/baeldung/array/AddElementToEndOfArrayUnitTest.java
+++ b/core-java-arrays/src/test/java/com/baeldung/array/AddElementToEndOfArrayUnitTest.java
@@ -3,44 +3,47 @@ package com.baeldung.array;
 import org.junit.Before;
 import org.junit.Test;
 
-import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertArrayEquals;
 
 public class AddElementToEndOfArrayUnitTest {
 
     AddElementToEndOfArray addElementToEndOfArray;
 
     @Before
-    public void init(){
+    public void init() {
         addElementToEndOfArray = new AddElementToEndOfArray();
     }
 
     @Test
-    public void givenSourceArrayAndElement_whenAddElementUsingArraysCopyIsInvoked_thenNewElementMustBeAdded(){
-        Integer[] sourceArray = {1,2,3,4};
+    public void givenSourceArrayAndElement_whenAddElementUsingArraysCopyIsInvoked_thenNewElementMustBeAdded() {
+        Integer[] sourceArray = {1, 2, 3, 4};
         int elementToAdd = 5;
 
         Integer[] destArray = addElementToEndOfArray.addElementUsingArraysCopyOf(sourceArray, elementToAdd);
 
-        assertEquals(elementToAdd, destArray[destArray.length-1].intValue());
+        Integer[] expectedArray = {1, 2, 3, 4, 5};
+        assertArrayEquals(expectedArray, destArray);
     }
 
     @Test
-    public void givenSourceArrayAndElement_whenAddElementUsingArrayListIsInvoked_thenNewElementMustBeAdded(){
-        Integer[] sourceArray = {1,2,3,4};
+    public void givenSourceArrayAndElement_whenAddElementUsingArrayListIsInvoked_thenNewElementMustBeAdded() {
+        Integer[] sourceArray = {1, 2, 3, 4};
         int elementToAdd = 5;
 
         Integer[] destArray = addElementToEndOfArray.addElementUsingArrayList(sourceArray, elementToAdd);
 
-        assertEquals(elementToAdd, destArray[destArray.length-1].intValue());
+        Integer[] expectedArray = {1, 2, 3, 4, 5};
+        assertArrayEquals(expectedArray, destArray);
     }
 
     @Test
-    public void givenSourceArrayAndElement_whenAddElementUsingSystemArrayCopyIsInvoked_thenNewElementMustBeAdded(){
-        Integer[] sourceArray = {1,2,3,4};
+    public void givenSourceArrayAndElement_whenAddElementUsingSystemArrayCopyIsInvoked_thenNewElementMustBeAdded() {
+        Integer[] sourceArray = {1, 2, 3, 4};
         int elementToAdd = 5;
 
         Integer[] destArray = addElementToEndOfArray.addElementUsingSystemArrayCopy(sourceArray, elementToAdd);
 
-        assertEquals(elementToAdd, destArray[destArray.length-1].intValue());
+        Integer[] expectedArray = {1, 2, 3, 4, 5};
+        assertArrayEquals(expectedArray, destArray);
     }
 }