diff --git a/src/main/java/de/butzlabben/world/data/objects/PlayerData.java b/src/main/java/de/butzlabben/world/data/objects/PlayerData.java
index bac1f02..bf64723 100644
--- a/src/main/java/de/butzlabben/world/data/objects/PlayerData.java
+++ b/src/main/java/de/butzlabben/world/data/objects/PlayerData.java
@@ -8,19 +8,34 @@ public class PlayerData {
     //TODO Write Tests
     private List<PlayerWorld> playerWorlds;
 
-
+    /**
+     * Inits a new Player Object
+     */
     public PlayerData() {
         playerWorlds = new ArrayList<PlayerWorld>();
     }
 
+    /**
+     * adds a world to the playerWorlds Array
+     * @param world the world data object to be added
+     */
     public void addWorld(PlayerWorld world) {
         playerWorlds.add(world);
     }
 
+    /**
+     * gets the current count of worlds that the player owns
+     * @return
+     */
     public int getWorldCount() {
         return playerWorlds.size();
     }
 
+    /**
+     * returns the world at a certain index
+     * @param index index of the world you want
+     * @return the World Data Object
+     */
     public PlayerWorld getWorldAt(int index) {
         return playerWorlds.get(index);
     }
diff --git a/src/main/java/de/butzlabben/world/data/objects/PlayerWorld.java b/src/main/java/de/butzlabben/world/data/objects/PlayerWorld.java
index 6d94358..75bb550 100644
--- a/src/main/java/de/butzlabben/world/data/objects/PlayerWorld.java
+++ b/src/main/java/de/butzlabben/world/data/objects/PlayerWorld.java
@@ -4,11 +4,21 @@ public class PlayerWorld {
     private int worldNumber;
     private long lastLoaded;
 
+    /**
+     * Creates an new Player World Data Structure if the worldNumber given
+     * @param worldNumber the index of the world held by the player
+     */
     public PlayerWorld(int worldNumber) {
         this.worldNumber = worldNumber;
         this.lastLoaded = -1;
     }
 
+    /**
+     * gets the world player index
+     * (player index = the index of the world in the player's
+     * world array)
+     * @return the world number
+     */
     public int getWorldNumber() {
         return worldNumber;
     }
diff --git a/src/main/java/de/butzlabben/world/data/objects/WorldSystemData.java b/src/main/java/de/butzlabben/world/data/objects/WorldSystemData.java
index 0b1dd60..9af4cef 100644
--- a/src/main/java/de/butzlabben/world/data/objects/WorldSystemData.java
+++ b/src/main/java/de/butzlabben/world/data/objects/WorldSystemData.java
@@ -13,10 +13,21 @@ import java.util.Map;
 public class WorldSystemData {
 
     public Map<String, PlayerData> players;
+
+    /**
+     * Creates the WorldSystemData objects
+     * and creates a blank map to hold player data
+     * with the uuid is the key
+     */
     public WorldSystemData() {
         players = new HashMap<String, PlayerData>();
     }
 
+    /**
+     * Adds a Player to the data record
+     * @param uuid the UUID of the player to be added
+     * @return returns whether the player was added successfully or not
+     */
     public Boolean addplayer(String uuid) {
         if (players.get(uuid) == null) {
             players.put(uuid, new PlayerData());
@@ -25,16 +36,30 @@ public class WorldSystemData {
         return false;
     }
 
+    /**
+     * adds a world Object to the player specified
+     * @param uuid the UUID of the player
+     * @param world the World Object to be added
+     */
     public void addWorldToPlayer(String uuid, PlayerWorld world) {
         if (players.get(uuid) != null) {
             players.get(uuid).addWorld(world);
         }
     }
 
+    /**
+     * Gets the Amount of playerdata stored by WorldSystem
+     * @return player count
+     */
     public int getPlayers() {
         return players.size();
     }
 
+    /**
+     * returns the player data of the specifed uuid
+     * @param uuid the UUID of the player you want
+     * @return returns the player data object
+     */
     public PlayerData getPlayer(String uuid) {
         return players.get(uuid);
     }
diff --git a/src/test/java/de/butzlabben/world/data/objects/TestPlayerData.java b/src/test/java/de/butzlabben/world/data/objects/TestPlayerData.java
index 52f33cc..37b45ae 100644
--- a/src/test/java/de/butzlabben/world/data/objects/TestPlayerData.java
+++ b/src/test/java/de/butzlabben/world/data/objects/TestPlayerData.java
@@ -7,6 +7,9 @@ import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class TestPlayerData {
 
+  /**
+   * Tests the Basic Initalization of a PlayerData Object
+   */
   @Test
   public void testPlayerDataInit() {
     PlayerData pd = new PlayerData();
@@ -14,19 +17,33 @@ public class TestPlayerData {
     assertEquals(0, pd.getWorldCount());
   }
 
+  /**
+   * Tests adding one world to the player
+   */
   @Test
   public void testAddWorld() {
     PlayerData pd = new PlayerData();
 
     pd.addWorld(new PlayerWorld(pd.getWorldCount()));
     assertEquals(1, pd.getWorldCount());
+  }
+
+  /**
+   * Tests adding multiple worlds to the player
+   */
+  @Test
+  public void testAddMultipleWorlds() {
+    PlayerData pd = new PlayerData();
 
     for (int i = 0; i < 5; i++) {
       pd.addWorld(new PlayerWorld(pd.getWorldCount()));
     }
-    assertEquals(6, pd.getWorldCount());
+    assertEquals(5, pd.getWorldCount());
   }
 
+  /**
+   * Tests geting a world at a specified index
+   */
   @Test
   public void testGetWorldAtIndex() {
     PlayerData pd = new PlayerData();
diff --git a/src/test/java/de/butzlabben/world/data/objects/TestPlayerWorld.java b/src/test/java/de/butzlabben/world/data/objects/TestPlayerWorld.java
index 900c72e..9964ed7 100644
--- a/src/test/java/de/butzlabben/world/data/objects/TestPlayerWorld.java
+++ b/src/test/java/de/butzlabben/world/data/objects/TestPlayerWorld.java
@@ -6,12 +6,18 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class TestPlayerWorld {
 
+  /**
+   * Tests the basic initiazlization of a new World with an id of 0
+   */
   @Test
   public void testPlayerWorldInit() {
     PlayerWorld pw = new PlayerWorld(0);
     assertEquals(0,pw.getWorldNumber());
   }
 
+  /**
+   * Test the initiazlization of a world with a index other than 0
+   */
   @Test
   public void testPlayerWorldInit2() {
     PlayerWorld pw = new PlayerWorld(6);
diff --git a/src/test/java/de/butzlabben/world/data/objects/TestWorldSystemData.java b/src/test/java/de/butzlabben/world/data/objects/TestWorldSystemData.java
index 028661a..7c3e0b3 100644
--- a/src/test/java/de/butzlabben/world/data/objects/TestWorldSystemData.java
+++ b/src/test/java/de/butzlabben/world/data/objects/TestWorldSystemData.java
@@ -6,6 +6,9 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class TestWorldSystemData {
 
+  /**
+   * Test the base initiaztaion of the WorldSystemData Object
+   */
   @Test
   public void testWorldSystemDataInit() {
     WorldSystemData wsd = new WorldSystemData();
@@ -13,6 +16,9 @@ public class TestWorldSystemData {
     assertEquals(0, wsd.getPlayers());
   }
 
+  /**
+   * Tests adding a basic player
+   */
   @Test
   public void testAddPlayer() {
     WorldSystemData wsd = new WorldSystemData();
@@ -23,6 +29,9 @@ public class TestWorldSystemData {
 
   }
 
+  /**
+   * Test adding multiple Players
+   */
   @Test
   public void testAddMultiplePlayers() {
     WorldSystemData wsd = new WorldSystemData();
@@ -38,7 +47,9 @@ public class TestWorldSystemData {
 
   }
 
-
+  /**
+   * Tests adding Duplicate PLayers
+   */
   @Test
   public void testAddDulpicatePlayer() {
     WorldSystemData wsd = new WorldSystemData();
@@ -51,6 +62,9 @@ public class TestWorldSystemData {
     assertEquals(1, wsd.getPlayers());
   }
 
+  /**
+   * Tests adding a world to a player
+   */
   @Test
   public void testAddWorldToPlayer() {
     WorldSystemData wsd = new WorldSystemData();
@@ -62,7 +76,9 @@ public class TestWorldSystemData {
     assertEquals(1, wsd.getPlayer("Blank_UUID").getWorldCount());
   }
 
-
+  /**
+   * Tests adding mulitple worlds a player
+   */
   @Test
   public void testAddMultipleWorldsToPlayer() {
     WorldSystemData wsd = new WorldSystemData();
diff --git a/target/classes/de/butzlabben/world/data/objects/PlayerData.class b/target/classes/de/butzlabben/world/data/objects/PlayerData.class
index 2d2c1f6..4c6d7fc 100644
Binary files a/target/classes/de/butzlabben/world/data/objects/PlayerData.class and b/target/classes/de/butzlabben/world/data/objects/PlayerData.class differ
diff --git a/target/classes/de/butzlabben/world/data/objects/PlayerWorld.class b/target/classes/de/butzlabben/world/data/objects/PlayerWorld.class
index e6bcb10..3a283a3 100644
Binary files a/target/classes/de/butzlabben/world/data/objects/PlayerWorld.class and b/target/classes/de/butzlabben/world/data/objects/PlayerWorld.class differ
diff --git a/target/classes/de/butzlabben/world/data/objects/WorldSystemData.class b/target/classes/de/butzlabben/world/data/objects/WorldSystemData.class
index d75b56e..110cddd 100644
Binary files a/target/classes/de/butzlabben/world/data/objects/WorldSystemData.class and b/target/classes/de/butzlabben/world/data/objects/WorldSystemData.class differ
diff --git a/target/test-classes/de/butzlabben/world/data/objects/TestPlayerData.class b/target/test-classes/de/butzlabben/world/data/objects/TestPlayerData.class
index 5e9ff98..b13c4d1 100644
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diff --git a/target/test-classes/de/butzlabben/world/data/objects/TestPlayerWorld.class b/target/test-classes/de/butzlabben/world/data/objects/TestPlayerWorld.class
index d1f88d0..04e32ff 100644
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diff --git a/target/test-classes/de/butzlabben/world/data/objects/TestWorldSystemData.class b/target/test-classes/de/butzlabben/world/data/objects/TestWorldSystemData.class
index 5752482..34303e4 100644
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