diff --git a/src/main/java/dev/trly/java/example/primitive/wrappers/InventoryAuditApp.java b/src/main/java/dev/trly/java/example/primitive/wrappers/InventoryAuditApp.java
index 9f1ad9e..a0284a1 100644
--- a/src/main/java/dev/trly/java/example/primitive/wrappers/InventoryAuditApp.java
+++ b/src/main/java/dev/trly/java/example/primitive/wrappers/InventoryAuditApp.java
@@ -6,22 +6,22 @@ private InventoryAuditApp() {
 
     public static void main(String[] args) {
         final Double[] unitPrices = {
-            new Double(19.99),
-            new Double(4.50),
-            new Double(120.00),
-            new Double(7.25)
+            Double.valueOf(19.99),
+            Double.valueOf(4.50),
+            Double.valueOf(120.00),
+            Double.valueOf(7.25)
         };
         final Boolean[] inStock = {
-            new Boolean(true),
-            new Boolean(false),
-            new Boolean(true),
-            new Boolean(true)
+            Boolean.valueOf(true),
+            Boolean.valueOf(false),
+            Boolean.valueOf(true),
+            Boolean.valueOf(true)
         };
         final Character[] grades = {
-            new Character('A'),
-            new Character('C'),
-            new Character('B'),
-            new Character('A')
+            Character.valueOf('A'),
+            Character.valueOf('C'),
+            Character.valueOf('B'),
+            Character.valueOf('A')
         };
 
         double totalValue = 0.0;
@@ -46,10 +46,10 @@ public static void main(String[] args) {
     }
 
     public static Double calculateAverageValue(double totalValue, int itemCount) {
-        return new Double(totalValue / itemCount);
+        return Double.valueOf(totalValue / itemCount);
     }
 
     public static Integer countAvailableItems(int totalItems, int outOfStockItems) {
-        return new Integer(totalItems - outOfStockItems);
+        return Integer.valueOf(totalItems - outOfStockItems);
     }
 }
diff --git a/src/main/java/dev/trly/java/example/primitive/wrappers/OrderRollupApp.java b/src/main/java/dev/trly/java/example/primitive/wrappers/OrderRollupApp.java
index 1eba00c..02f3d12 100644
--- a/src/main/java/dev/trly/java/example/primitive/wrappers/OrderRollupApp.java
+++ b/src/main/java/dev/trly/java/example/primitive/wrappers/OrderRollupApp.java
@@ -6,16 +6,16 @@ private OrderRollupApp() {
 
     public static void main(String[] args) {
         final Integer[] boxCounts = {
-            new Integer(4),
-            new Integer(7),
-            new Integer(3),
-            new Integer(5)
+            Integer.valueOf(4),
+            Integer.valueOf(7),
+            Integer.valueOf(3),
+            Integer.valueOf(5)
         };
         final Long[] orderValues = {
-            new Long(1299L),
-            new Long(2450L),
-            new Long(875L),
-            new Long(1625L)
+            Long.valueOf(1299L),
+            Long.valueOf(2450L),
+            Long.valueOf(875L),
+            Long.valueOf(1625L)
         };
 
         int totalBoxes = 0;
@@ -32,12 +32,12 @@ public static void main(String[] args) {
     }
 
     public static Integer calculatePackingUnits(int boxesPerOrder, int orderCount) {
-        return new Integer(boxesPerOrder * orderCount);
+        return Integer.valueOf(boxesPerOrder * orderCount);
     }
 
     public static Long estimateShippingCents(long baseCents, int boxCount) {
-        final Long perBoxCents = new Long(baseCents);
-        final Long totalCents = new Long(perBoxCents.longValue() * boxCount);
-        return new Long(totalCents.longValue());
+        final Long perBoxCents = Long.valueOf(baseCents);
+        final Long totalCents = Long.valueOf(perBoxCents.longValue() * boxCount);
+        return Long.valueOf(totalCents.longValue());
     }
 }