diff --git a/src/de/epiceric/shopchest/interfaces/Hologram.java b/src/de/epiceric/shopchest/interfaces/Hologram.java
index a15e193..97e5b0a 100644
--- a/src/de/epiceric/shopchest/interfaces/Hologram.java
+++ b/src/de/epiceric/shopchest/interfaces/Hologram.java
@@ -8,18 +8,16 @@ import java.util.List;
 
 public interface Hologram {
 
-    public Location getLocation();
+    Location getLocation();
 
-    public List<?> getEntities();
+    void showPlayer(OfflinePlayer p);
 
-    public void showPlayer(OfflinePlayer p);
+    void hidePlayer(OfflinePlayer p);
 
-    public void hidePlayer(OfflinePlayer p);
+    boolean isVisible(OfflinePlayer p);
 
-    public boolean isVisible(OfflinePlayer p);
+    boolean exists();
 
-    public boolean exists();
-
-    public void remove();
+    void remove();
 
 }
diff --git a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_10_R1.java b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_10_R1.java
index f1525f9..d4f75f0 100644
--- a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_10_R1.java
+++ b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_10_R1.java
@@ -1,27 +1,23 @@
 package de.epiceric.shopchest.interfaces.hologram;
 
 import de.epiceric.shopchest.interfaces.Hologram;
-import net.minecraft.server.v1_10_R1.EntityArmorStand;
-import net.minecraft.server.v1_10_R1.PacketPlayOutEntityDestroy;
-import net.minecraft.server.v1_10_R1.PacketPlayOutSpawnEntityLiving;
+import net.minecraft.server.v1_10_R1.*;
 import org.bukkit.Location;
 import org.bukkit.OfflinePlayer;
 import org.bukkit.craftbukkit.v1_10_R1.CraftWorld;
 import org.bukkit.craftbukkit.v1_10_R1.entity.CraftPlayer;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 
 public class Hologram_1_10_R1 implements Hologram {
 
     private boolean exists = false;
     private int count;
-    private List<EntityArmorStand> entitylist = new ArrayList<EntityArmorStand>();
+    private List<EntityArmorStand> entityList = new ArrayList<>();
     private String[] text;
     private Location location;
-    private double DISTANCE = 0.25D;
-    private HashMap<OfflinePlayer, Boolean> visible = new HashMap<OfflinePlayer, Boolean>();
+    private List<OfflinePlayer> visible = new ArrayList<>();
 
     public Hologram_1_10_R1(String[] text, Location location) {
         this.text = text;
@@ -33,31 +29,26 @@ public class Hologram_1_10_R1 implements Hologram {
         return location;
     }
 
-    public List<EntityArmorStand> getEntities() {
-        return entitylist;
-    }
-
     public void showPlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutSpawnEntityLiving packet = new PacketPlayOutSpawnEntityLiving(armor);
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, true);
+        visible.add(p);
     }
 
     public void hidePlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy(armor.getId());
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, false);
+        visible.remove(p);
     }
 
     public boolean isVisible(OfflinePlayer p) {
-        if (visible.containsKey(p)) return visible.get(p);
-        else return false;
+        return visible.contains(p);
     }
 
     private void create() {
@@ -67,13 +58,13 @@ public class Hologram_1_10_R1 implements Hologram {
             entity.setCustomNameVisible(true);
             entity.setInvisible(true);
             entity.setNoGravity(true);
-            entitylist.add(entity);
-            this.location.subtract(0, this.DISTANCE, 0);
+            entityList.add(entity);
+            this.location.subtract(0, 0.25, 0);
             count++;
         }
 
         for (int i = 0; i < count; i++) {
-            this.location.add(0, this.DISTANCE, 0);
+            this.location.add(0, 0.25, 0);
         }
 
         count = 0;
@@ -85,7 +76,7 @@ public class Hologram_1_10_R1 implements Hologram {
     }
 
     public void remove() {
-        for (EntityArmorStand e : entitylist) {
+        for (EntityArmorStand e : entityList) {
             e.die();
         }
         exists = false;
diff --git a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R1.java b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R1.java
index 36a2ce5..c52bc8f 100644
--- a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R1.java
+++ b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R1.java
@@ -10,18 +10,16 @@ import org.bukkit.craftbukkit.v1_8_R1.CraftWorld;
 import org.bukkit.craftbukkit.v1_8_R1.entity.CraftPlayer;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 
 public class Hologram_1_8_R1 implements Hologram {
 
     private boolean exists = false;
     private int count;
-    private List<EntityArmorStand> entitylist = new ArrayList<EntityArmorStand>();
+    private List<EntityArmorStand> entityList = new ArrayList<>();
     private String[] text;
     private Location location;
-    private double DISTANCE = 0.25D;
-    private HashMap<OfflinePlayer, Boolean> visible = new HashMap<OfflinePlayer, Boolean>();
+    private List<OfflinePlayer> visible = new ArrayList<>();
 
     public Hologram_1_8_R1(String[] text, Location location) {
         this.text = text;
@@ -33,31 +31,26 @@ public class Hologram_1_8_R1 implements Hologram {
         return location;
     }
 
-    public List<EntityArmorStand> getEntities() {
-        return entitylist;
-    }
-
     public void showPlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutSpawnEntityLiving packet = new PacketPlayOutSpawnEntityLiving(armor);
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, true);
+        visible.add(p);
     }
 
     public void hidePlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy(armor.getId());
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, false);
+        visible.remove(p);
     }
 
     public boolean isVisible(OfflinePlayer p) {
-        if (visible.containsKey(p)) return visible.get(p);
-        else return false;
+        return visible.contains(p);
     }
 
     private void create() {
@@ -67,13 +60,13 @@ public class Hologram_1_8_R1 implements Hologram {
             entity.setCustomNameVisible(true);
             entity.setInvisible(true);
             entity.setGravity(false);
-            entitylist.add(entity);
-            this.location.subtract(0, this.DISTANCE, 0);
+            entityList.add(entity);
+            this.location.subtract(0, 0.25, 0);
             count++;
         }
 
         for (int i = 0; i < count; i++) {
-            this.location.add(0, this.DISTANCE, 0);
+            this.location.add(0, 0.25, 0);
         }
 
         count = 0;
@@ -85,7 +78,7 @@ public class Hologram_1_8_R1 implements Hologram {
     }
 
     public void remove() {
-        for (EntityArmorStand e : entitylist) {
+        for (EntityArmorStand e : entityList) {
             e.die();
         }
         exists = false;
diff --git a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R2.java b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R2.java
index 457c9fa..c8148fa 100644
--- a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R2.java
+++ b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R2.java
@@ -17,11 +17,10 @@ public class Hologram_1_8_R2 implements Hologram {
 
     private boolean exists = false;
     private int count;
-    private List<EntityArmorStand> entitylist = new ArrayList<EntityArmorStand>();
+    private List<EntityArmorStand> entityList = new ArrayList<>();
     private String[] text;
     private Location location;
-    private double DISTANCE = 0.25D;
-    private HashMap<OfflinePlayer, Boolean> visible = new HashMap<OfflinePlayer, Boolean>();
+    private List<OfflinePlayer> visible = new ArrayList<>();
 
     public Hologram_1_8_R2(String[] text, Location location) {
         this.text = text;
@@ -33,31 +32,26 @@ public class Hologram_1_8_R2 implements Hologram {
         return location;
     }
 
-    public List<EntityArmorStand> getEntities() {
-        return entitylist;
-    }
-
     public void showPlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutSpawnEntityLiving packet = new PacketPlayOutSpawnEntityLiving(armor);
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, true);
+        visible.add(p);
     }
 
     public void hidePlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy(armor.getId());
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, false);
+        visible.remove(p);
     }
 
     public boolean isVisible(OfflinePlayer p) {
-        if (visible.containsKey(p)) return visible.get(p);
-        else return false;
+        return visible.contains(p);
     }
 
     private void create() {
@@ -67,13 +61,13 @@ public class Hologram_1_8_R2 implements Hologram {
             entity.setCustomNameVisible(true);
             entity.setInvisible(true);
             entity.setGravity(false);
-            entitylist.add(entity);
-            this.location.subtract(0, this.DISTANCE, 0);
+            entityList.add(entity);
+            this.location.subtract(0, 0.25, 0);
             count++;
         }
 
         for (int i = 0; i < count; i++) {
-            this.location.add(0, this.DISTANCE, 0);
+            this.location.add(0, 0.25, 0);
         }
 
         count = 0;
@@ -85,7 +79,7 @@ public class Hologram_1_8_R2 implements Hologram {
     }
 
     public void remove() {
-        for (EntityArmorStand e : entitylist) {
+        for (EntityArmorStand e : entityList) {
             e.die();
         }
         exists = false;
diff --git a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R3.java b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R3.java
index 45c9e54..b502039 100644
--- a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R3.java
+++ b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_8_R3.java
@@ -17,11 +17,10 @@ public class Hologram_1_8_R3 implements Hologram {
 
     private boolean exists = false;
     private int count;
-    private List<EntityArmorStand> entitylist = new ArrayList<EntityArmorStand>();
+    private List<EntityArmorStand> entityList = new ArrayList<>();
     private String[] text;
     private Location location;
-    private double DISTANCE = 0.25D;
-    private HashMap<OfflinePlayer, Boolean> visible = new HashMap<OfflinePlayer, Boolean>();
+    private List<OfflinePlayer> visible = new ArrayList<>();
 
     public Hologram_1_8_R3(String[] text, Location location) {
         this.text = text;
@@ -33,31 +32,26 @@ public class Hologram_1_8_R3 implements Hologram {
         return location;
     }
 
-    public List<EntityArmorStand> getEntities() {
-        return entitylist;
-    }
-
     public void showPlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutSpawnEntityLiving packet = new PacketPlayOutSpawnEntityLiving(armor);
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, true);
+        visible.add(p);
     }
 
     public void hidePlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy(armor.getId());
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, false);
+        visible.remove(p);
     }
 
     public boolean isVisible(OfflinePlayer p) {
-        if (visible.containsKey(p)) return visible.get(p);
-        else return false;
+        return visible.contains(p);
     }
 
     private void create() {
@@ -67,13 +61,13 @@ public class Hologram_1_8_R3 implements Hologram {
             entity.setCustomNameVisible(true);
             entity.setInvisible(true);
             entity.setGravity(false);
-            entitylist.add(entity);
-            this.location.subtract(0, this.DISTANCE, 0);
+            entityList.add(entity);
+            this.location.subtract(0, 0.25, 0);
             count++;
         }
 
         for (int i = 0; i < count; i++) {
-            this.location.add(0, this.DISTANCE, 0);
+            this.location.add(0, 0.25, 0);
         }
 
         count = 0;
@@ -85,7 +79,7 @@ public class Hologram_1_8_R3 implements Hologram {
     }
 
     public void remove() {
-        for (EntityArmorStand e : entitylist) {
+        for (EntityArmorStand e : entityList) {
             e.die();
         }
         exists = false;
diff --git a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R1.java b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R1.java
index d6b39a3..8e01d09 100644
--- a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R1.java
+++ b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R1.java
@@ -17,11 +17,10 @@ public class Hologram_1_9_R1 implements Hologram {
 
     private boolean exists = false;
     private int count;
-    private List<EntityArmorStand> entitylist = new ArrayList<EntityArmorStand>();
+    private List<EntityArmorStand> entityList = new ArrayList<>();
     private String[] text;
     private Location location;
-    private double DISTANCE = 0.25D;
-    private HashMap<OfflinePlayer, Boolean> visible = new HashMap<OfflinePlayer, Boolean>();
+    private List<OfflinePlayer> visible = new ArrayList<>();
 
     public Hologram_1_9_R1(String[] text, Location location) {
         this.text = text;
@@ -33,31 +32,26 @@ public class Hologram_1_9_R1 implements Hologram {
         return location;
     }
 
-    public List<EntityArmorStand> getEntities() {
-        return entitylist;
-    }
-
     public void showPlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutSpawnEntityLiving packet = new PacketPlayOutSpawnEntityLiving(armor);
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, true);
+        visible.add(p);
     }
 
     public void hidePlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy(armor.getId());
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, false);
+        visible.remove(p);
     }
 
     public boolean isVisible(OfflinePlayer p) {
-        if (visible.containsKey(p)) return visible.get(p);
-        else return false;
+        return visible.contains(p);
     }
 
     private void create() {
@@ -67,13 +61,13 @@ public class Hologram_1_9_R1 implements Hologram {
             entity.setCustomNameVisible(true);
             entity.setInvisible(true);
             entity.setGravity(false);
-            entitylist.add(entity);
-            this.location.subtract(0, this.DISTANCE, 0);
+            entityList.add(entity);
+            this.location.subtract(0, 0.25, 0);
             count++;
         }
 
         for (int i = 0; i < count; i++) {
-            this.location.add(0, this.DISTANCE, 0);
+            this.location.add(0, 0.25, 0);
         }
 
         count = 0;
@@ -85,7 +79,7 @@ public class Hologram_1_9_R1 implements Hologram {
     }
 
     public void remove() {
-        for (EntityArmorStand e : entitylist) {
+        for (EntityArmorStand e : entityList) {
             e.die();
         }
         exists = false;
diff --git a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R2.java b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R2.java
index aa2c8d3..138400d 100644
--- a/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R2.java
+++ b/src/de/epiceric/shopchest/interfaces/hologram/Hologram_1_9_R2.java
@@ -10,18 +10,16 @@ import org.bukkit.craftbukkit.v1_9_R2.CraftWorld;
 import org.bukkit.craftbukkit.v1_9_R2.entity.CraftPlayer;
 
 import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 
 public class Hologram_1_9_R2 implements Hologram {
 
     private boolean exists = false;
     private int count;
-    private List<EntityArmorStand> entitylist = new ArrayList<EntityArmorStand>();
+    private List<EntityArmorStand> entityList = new ArrayList<>();
     private String[] text;
     private Location location;
-    private double DISTANCE = 0.25D;
-    private HashMap<OfflinePlayer, Boolean> visible = new HashMap<OfflinePlayer, Boolean>();
+    private List<OfflinePlayer> visible = new ArrayList<>();
 
     public Hologram_1_9_R2(String[] text, Location location) {
         this.text = text;
@@ -33,31 +31,26 @@ public class Hologram_1_9_R2 implements Hologram {
         return location;
     }
 
-    public List<EntityArmorStand> getEntities() {
-        return entitylist;
-    }
-
     public void showPlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutSpawnEntityLiving packet = new PacketPlayOutSpawnEntityLiving(armor);
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, true);
+        visible.add(p);
     }
 
     public void hidePlayer(OfflinePlayer p) {
-        for (Object o : entitylist) {
+        for (Object o : entityList) {
             EntityArmorStand armor = (EntityArmorStand) o;
             PacketPlayOutEntityDestroy packet = new PacketPlayOutEntityDestroy(armor.getId());
             ((CraftPlayer) p).getHandle().playerConnection.sendPacket(packet);
         }
-        visible.put(p, false);
+        visible.remove(p);
     }
 
     public boolean isVisible(OfflinePlayer p) {
-        if (visible.containsKey(p)) return visible.get(p);
-        else return false;
+        return visible.contains(p);
     }
 
     private void create() {
@@ -67,13 +60,13 @@ public class Hologram_1_9_R2 implements Hologram {
             entity.setCustomNameVisible(true);
             entity.setInvisible(true);
             entity.setGravity(false);
-            entitylist.add(entity);
-            this.location.subtract(0, this.DISTANCE, 0);
+            entityList.add(entity);
+            this.location.subtract(0, 0.25, 0);
             count++;
         }
 
         for (int i = 0; i < count; i++) {
-            this.location.add(0, this.DISTANCE, 0);
+            this.location.add(0, 0.25, 0);
         }
 
         count = 0;
@@ -85,7 +78,7 @@ public class Hologram_1_9_R2 implements Hologram {
     }
 
     public void remove() {
-        for (EntityArmorStand e : entitylist) {
+        for (EntityArmorStand e : entityList) {
             e.die();
         }
         exists = false;