feat: implements exception handling for invalid input for Order and Product

Author: Dlafferty251

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/ecommerce/OrderNotFoundException.java

@@ -5,4 +5,9 @@
 
 package com.codedifferently.lesson14.ecommerce;
 
-class OrderNotFoundException {}
+public class OrderNotFoundException extends Exception {
+
+  public OrderNotFoundException(String message) {
+    super(message);
+  }
+}

lesson_14/exceptions/exceptions_app/src/main/java/com/codedifferently/lesson14/ecommerce/ProductNotFoundException.java

@@ -5,4 +5,8 @@
 
 package com.codedifferently.lesson14.ecommerce;
 
-class ProductNotFoundException {}
+public class ProductNotFoundException extends Exception {
+  public ProductNotFoundException(String message) {
+    super(message);
+  }
+}