Fixed getArmorContents() return value

src/main/java/org/bukkit/ItemStack.java

@@ -126,6 +126,11 @@ public class ItemStack {
         return -1;
     }
 
+    @Override
+    public String toString() {
+        return "ItemStack{"+getType().name()+" x "+getAmount()+"}";
+    }
+
     @Override
     public boolean equals(Object object) {
         return false;