2

Inventory.java

                 if (items[i].getQuality() > 0) {
                     //level 3 - item type
                     if (!items[i].getName().equals("Sulfuras, Hand of Ragnaros")) {
-                        items[i].setQuality(items[i].getQuality() - 1);
+                        updateQuality(items[i], -1);
                     }
                 }
             //level 1 - item type
             } else {
                 //level 2 - quality
                 if (items[i].getQuality() < 50) {
-                    items[i].setQuality(items[i].getQuality() + 1);
+                    updateQuality(items[i], 1);
                     //level 3 - item type
                     if (items[i].getName() == "Backstage passes to a TAFKAL80ETC concert") {
                         //level 4 - sell in date
                         if (items[i].getSellIn() < 11) {
                             //level 5 - quality
                             if (items[i].getQuality() < 50) {
-                                items[i].setQuality(items[i].getQuality() + 1);
+                                updateQuality(items[i], 1);
                             }
                         }
                         //level 4 - sell in date
                         if (items[i].getSellIn() < 6) {
                             //level 5 - quality
                             if (items[i].getQuality() < 50) {
-                                items[i].setQuality(items[i].getQuality() + 1);
+                                updateQuality(items[i], 1);
                             }
                         }
                     }
             
             //level 1 - item type
             if (!items[i].getName().equals("Sulfuras, Hand of Ragnaros")) {
-                items[i].setSellIn(items[i].getSellIn() - 1);
+                updateSellIn(items[i]);
             }
             
             
     public void updateQuality(Item item, int amount){
         item.setQuality(item.getQuality() + amount);
     }
+    
+    public void updateSellIn(Item item){
+        item.setSellIn(item.getSellIn() - 1);
+    }
 }