diff --git a/README b/README
deleted file mode 100644
index e901bed..0000000
--- a/README
+++ /dev/null
@@ -1,23 +0,0 @@
-###################
-# To compile code #
-###################
-
-make all
-
-###################
-# To cleanup code #
-###################
-
-make clean
-
-###################
-# To execute code #
-###################
-
-java Zork [game xml]
-
-######################
-# Sample Walkthrough #
-######################
-(Example inputs can be found in RunThroughResults.txt as to how to beat the sample game)
-java Zork sampleGame.xml
diff --git a/REFACTORS.md b/REFACTORS.md
new file mode 100644
index 0000000..41f6703
--- /dev/null
+++ b/REFACTORS.md
@@ -0,0 +1,8 @@
+# Refactors done
+
+- chore: move to package `com.github.dtschust.zork`
+    - default package is bad
+- remove 5 redundant `if` statements from `ZorkCommand`, `ZorkCommandHas`, `ZorkCondtionStatus'
+    - e.g. `if (blah) return true; else return false;` can be simplified to `return blah;`
+- replaced 2 `for` with foreach loops in `ZorkCreature` and `ZorkTrigger`
+- 23 use of diamond operator in `Zork`, `ZorkContainer`, `ZorkCreature`, `ZorkItem`, `ZorkObject`, `ZorkRoom`, `ZorkTrigger`
\ No newline at end of file
diff --git a/src/main/java/com/github/dtschust/zork/Zork.java b/src/main/java/com/github/dtschust/zork/Zork.java
index 6439edf..2228cd8 100644
--- a/src/main/java/com/github/dtschust/zork/Zork.java
+++ b/src/main/java/com/github/dtschust/zork/Zork.java
@@ -19,13 +19,13 @@ import java.util.Scanner;
 public class Zork {
     public String userInput = "";
     /*Hashmaps to store the instance of the game*/
-    public HashMap<String, ZorkRoom> Rooms = new HashMap<String, ZorkRoom>();
-    public HashMap<String, ZorkItem> Items = new HashMap<String, ZorkItem>();
-    public HashMap<String, ZorkContainer> Containers = new HashMap<String, ZorkContainer>();
-    public HashMap<String, ZorkObject> Objects = new HashMap<String, ZorkObject>();
-    public HashMap<String, ZorkCreature> Creatures = new HashMap<String, ZorkCreature>();
-    public HashMap<String, String> Inventory = new HashMap<String, String>();
-    public HashMap<String, String> ObjectLookup = new HashMap<String, String>();
+    public HashMap<String, ZorkRoom> Rooms = new HashMap<>();
+    public HashMap<String, ZorkItem> Items = new HashMap<>();
+    public HashMap<String, ZorkContainer> Containers = new HashMap<>();
+    public HashMap<String, ZorkObject> Objects = new HashMap<>();
+    public HashMap<String, ZorkCreature> Creatures = new HashMap<>();
+    public HashMap<String, String> Inventory = new HashMap<>();
+    public HashMap<String, String> ObjectLookup = new HashMap<>();
     public String currentRoom;
     public File file;
     Scanner source = new Scanner(System.in);
@@ -164,7 +164,7 @@ public class Zork {
 
                         /*Add this room to the rooms hashmap, put it in the generic objects hashmap, and store it's type in the objectlookup hashmap*/
                         Rooms.put(tempRoom.name, tempRoom);
-                        Objects.put(tempRoom.name, (ZorkObject) tempRoom);
+                        Objects.put(tempRoom.name, tempRoom);
                         ObjectLookup.put(tempRoom.name, "room");
                     }
 
@@ -261,7 +261,7 @@ public class Zork {
 
                         /* Put each item in the items hashmap, the generic objects hashmap, and store its type in objectlookup*/
                         Items.put(tempItem.name, tempItem);
-                        Objects.put(tempItem.name, (ZorkObject) tempItem);
+                        Objects.put(tempItem.name, tempItem);
                         ObjectLookup.put(tempItem.name, "item");
 
                     }
@@ -356,7 +356,7 @@ public class Zork {
 
                         /* Put each container in the containers hashmap, the generic object hashmap, and the objectlookup hashmap*/
                         Containers.put(tempCont.name, tempCont);
-                        Objects.put(tempCont.name, (ZorkObject) tempCont);
+                        Objects.put(tempCont.name, tempCont);
                         ObjectLookup.put(tempCont.name, "container");
                     }
 
@@ -478,7 +478,7 @@ public class Zork {
 
                         /* Put each creature in the creatures hashmap, the generic object hashmap, and the objectlookup hashmap*/
                         Creatures.put(tempCreature.name, tempCreature);
-                        Objects.put(tempCreature.name, (ZorkObject) tempCreature);
+                        Objects.put(tempCreature.name, tempCreature);
                         ObjectLookup.put(tempCreature.name, "creature");
                     }
 
@@ -698,7 +698,6 @@ public class Zork {
         else {
             System.out.println("Error");
         }
-        return;
     }
 
     /* Check triggers */
diff --git a/src/main/java/com/github/dtschust/zork/ZorkCommand.java b/src/main/java/com/github/dtschust/zork/ZorkCommand.java
index 9b4d0ed..a58efdc 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkCommand.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkCommand.java
@@ -5,9 +5,6 @@ class ZorkCommand extends ZorkCondition {
     String command;
 
     public boolean evaluate(Zork zork) {
-        if (command.equals(zork.userInput))
-            return true;
-        else
-            return false;
+        return command.equals(zork.userInput);
     }
 }
diff --git a/src/main/java/com/github/dtschust/zork/ZorkConditionHas.java b/src/main/java/com/github/dtschust/zork/ZorkConditionHas.java
index f8e7bc6..7bf5559 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkConditionHas.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkConditionHas.java
@@ -8,30 +8,18 @@ class ZorkConditionHas extends ZorkCondition {
     public boolean evaluate(Zork zork) {
         /*Inventory is a special case as it isn't the name of any object in the game, check for it specifically*/
         if (owner.equals("inventory")) {
-            if (zork.Inventory.get(object) != null && has.equals("yes") || zork.Inventory.get(object) == null && has.equals("no")) {
-                return true;
-            } else {
-                return false;
-            }
+            return zork.Inventory.get(object) != null && has.equals("yes") || zork.Inventory.get(object) == null && has.equals("no");
         } else {
             /* is it a room?*/
             ZorkRoom roomObject = zork.Rooms.get(owner);
             if (roomObject != null) {
-                if ((roomObject).item.get(object) != null && has.equals("yes") || (roomObject).item.get(object) == null && has.equals("no")) {
-                    return true;
-                } else {
-                    return false;
-                }
+                return (roomObject).item.get(object) != null && has.equals("yes") || (roomObject).item.get(object) == null && has.equals("no");
             }
             /* is it a container?*/
             else {
                 ZorkContainer containerObject = zork.Containers.get(owner);
                 if (containerObject != null) {
-                    if ((containerObject).item.get(object) != null && has.equals("yes") || (containerObject).item.get(object) == null && has.equals("no")) {
-                        return true;
-                    } else {
-                        return false;
-                    }
+                    return (containerObject).item.get(object) != null && has.equals("yes") || (containerObject).item.get(object) == null && has.equals("no");
 
                 }
             }
diff --git a/src/main/java/com/github/dtschust/zork/ZorkConditionStatus.java b/src/main/java/com/github/dtschust/zork/ZorkConditionStatus.java
index ca32228..25e9eab 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkConditionStatus.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkConditionStatus.java
@@ -6,9 +6,6 @@ class ZorkConditionStatus extends ZorkCondition {
 
     public boolean evaluate(Zork zork) {
         ZorkObject tested = zork.Objects.get(object);
-        if (tested != null && tested.status.equals(status))
-            return true;
-        else
-            return false;
+        return tested != null && tested.status.equals(status);
     }
 }
diff --git a/src/main/java/com/github/dtschust/zork/ZorkContainer.java b/src/main/java/com/github/dtschust/zork/ZorkContainer.java
index e055c1c..6797aee 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkContainer.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkContainer.java
@@ -6,9 +6,9 @@ import java.util.HashMap;
 /* Container*/
 class ZorkContainer extends ZorkObject {
     public String name;
-    public HashMap<String, String> item = new HashMap<String, String>();
+    public HashMap<String, String> item = new HashMap<>();
     public String description;
-    public ArrayList<String> accept = new ArrayList<String>();
+    public ArrayList<String> accept = new ArrayList<>();
     boolean isOpen;
 
     public ZorkContainer() {
diff --git a/src/main/java/com/github/dtschust/zork/ZorkCreature.java b/src/main/java/com/github/dtschust/zork/ZorkCreature.java
index 950a701..eab8a21 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkCreature.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkCreature.java
@@ -7,10 +7,10 @@ import java.util.HashMap;
 class ZorkCreature extends ZorkObject {
     public String name;
     public String description;
-    public HashMap<String, String> vulnerability = new HashMap<String, String>();
-    public ArrayList<ZorkCondition> conditions = new ArrayList<ZorkCondition>();
-    public ArrayList<String> print = new ArrayList<String>();
-    public ArrayList<String> action = new ArrayList<String>();
+    public HashMap<String, String> vulnerability = new HashMap<>();
+    public ArrayList<ZorkCondition> conditions = new ArrayList<>();
+    public ArrayList<String> print = new ArrayList<>();
+    public ArrayList<String> action = new ArrayList<>();
 
     public ZorkCreature() {
     }
@@ -20,8 +20,8 @@ class ZorkCreature extends ZorkObject {
         if (vulnerability.get(weapon) == null) {
             return false;
         }
-        for (int i = 0; i < conditions.size(); i++) {
-            if (!conditions.get(i).evaluate(zork)) {
+        for (ZorkCondition condition : conditions) {
+            if (!condition.evaluate(zork)) {
                 return false;
             }
         }
diff --git a/src/main/java/com/github/dtschust/zork/ZorkItem.java b/src/main/java/com/github/dtschust/zork/ZorkItem.java
index 53c480f..a354395 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkItem.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkItem.java
@@ -7,8 +7,8 @@ class ZorkItem extends ZorkObject {
     public String name;
     public String description;
     public String writing;
-    public ArrayList<String> turnOnPrint = new ArrayList<String>();
-    public ArrayList<String> turnOnAction = new ArrayList<String>();
+    public ArrayList<String> turnOnPrint = new ArrayList<>();
+    public ArrayList<String> turnOnAction = new ArrayList<>();
 
     public ZorkItem() {
     }
diff --git a/src/main/java/com/github/dtschust/zork/ZorkObject.java b/src/main/java/com/github/dtschust/zork/ZorkObject.java
index 10a69c5..f5abc90 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkObject.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkObject.java
@@ -5,7 +5,7 @@ import java.util.ArrayList;
 /* Generic object, everything inherits from this*/
 class ZorkObject {
     public String status;
-    public ArrayList<ZorkTrigger> trigger = new ArrayList<ZorkTrigger>();
+    public ArrayList<ZorkTrigger> trigger = new ArrayList<>();
 
     public ZorkObject() {
     }
diff --git a/src/main/java/com/github/dtschust/zork/ZorkRoom.java b/src/main/java/com/github/dtschust/zork/ZorkRoom.java
index 18b6443..898d7e2 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkRoom.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkRoom.java
@@ -7,10 +7,10 @@ class ZorkRoom extends ZorkObject {
     public String name;
     public String type = "regular";
     public String description;
-    public HashMap<String, String> border = new HashMap<String, String>();
-    public HashMap<String, String> container = new HashMap<String, String>();
-    public HashMap<String, String> item = new HashMap<String, String>();
-    public HashMap<String, String> creature = new HashMap<String, String>();
+    public HashMap<String, String> border = new HashMap<>();
+    public HashMap<String, String> container = new HashMap<>();
+    public HashMap<String, String> item = new HashMap<>();
+    public HashMap<String, String> creature = new HashMap<>();
 
     public ZorkRoom() {
     }
diff --git a/src/main/java/com/github/dtschust/zork/ZorkTrigger.java b/src/main/java/com/github/dtschust/zork/ZorkTrigger.java
index f175044..5fb5f75 100644
--- a/src/main/java/com/github/dtschust/zork/ZorkTrigger.java
+++ b/src/main/java/com/github/dtschust/zork/ZorkTrigger.java
@@ -4,15 +4,15 @@ import java.util.ArrayList;
 
 /*Trigger*/
 class ZorkTrigger {
-    public ArrayList<ZorkCondition> conditions = new ArrayList<ZorkCondition>();
-    public ArrayList<String> print = new ArrayList<String>();
-    public ArrayList<String> action = new ArrayList<String>();
+    public ArrayList<ZorkCondition> conditions = new ArrayList<>();
+    public ArrayList<String> print = new ArrayList<>();
+    public ArrayList<String> action = new ArrayList<>();
     String type = "single"; /*By default, single*/
     boolean hasCommand = false;
 
     public boolean evaluate(Zork zork) {
-        for (int i = 0; i < conditions.size(); i++) {
-            if (!conditions.get(i).evaluate(zork)) {
+        for (ZorkCondition condition : conditions) {
+            if (!condition.evaluate(zork)) {
                 return false;
             }
         }