diff --git a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
index 29bb2c6..bf1f772 100644
--- a/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
+++ b/app/src/main/java/ch/zhaw/projekt2/turnierverwaltung/Player.java
@@ -1,54 +1,117 @@
 package ch.zhaw.projekt2.turnierverwaltung;
 
-import java.text.DateFormat;
-import java.text.SimpleDateFormat;
+
 import java.time.LocalDate;
 import java.time.format.DateTimeFormatter;
+import java.util.logging.Logger;
 
-public class Player extends Person implements Participant{
+/**
+ * Class Representing a single Player
+ */
+public class Player extends Person implements Participant {
 
     private LocalDate dateOfBirth;
 
+    private static final Logger logger = Logger.getLogger(FileIO.class.getCanonicalName());
+
+    /**
+     * Constructor of player initializes a new player setting sever attributes like firstname, name birthdate usw.
+     * and checking if the format is valid
+     *
+     * @param firstName   the firstname of the player
+     * @param name        the name of the player
+     * @param phoneNumber the phone number of the player
+     * @param dateOfBirth the birthdate of the player
+     * @throws InvalidNameException        thrown when the name or firstname are not in a valid format
+     * @throws InvalidPhoneNumberException thrown when the phone number is not in a valid format
+     */
     public Player(String firstName, String name, String phoneNumber, String dateOfBirth) throws InvalidNameException, InvalidPhoneNumberException {
         super(firstName, name, phoneNumber);
+        logger.fine("initialized super of Player with firstname, name and phone number");
+        logger.finer("Setting the date of birth as:" + dateOfBirth);
         setDateOfBirth(dateOfBirth);
+        logger.finer("finished initializing the Player:" + name);
     }
 
+    /**
+     * Method to get the birthday of a player
+     *
+     * @return the birthday of a player
+     */
     public LocalDate getDateOfBirth() {
+        logger.fine("returning the birthday of " + getName());
         return dateOfBirth;
     }
 
-    public String getFormatedDateOfBirth(){
-        try{
+    /**
+     * Method that returns the date of birth formatted in eu way dd.MM.YYYY and as String
+     *
+     * @return String of formatted date
+     */
+    public String getFormattedDateOfBirth() {
+        logger.finer("Trying to get the formated date");
+        try {
             DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd.MM.yyyy");
-            return dateOfBirth.format(formatter);
+            logger.fine("Returning the formatted birthdate of player: " + getName());
+            return dateOfBirth.format(
+                    formatter);
         } catch (Exception e) {
-           //todo handle and logging
+            logger.warning("Failed to get formatted date for player " + getName() + "Error: " + e);
+            //TODO handle
             return "";
         }
     }
 
+    /**
+     * Method to set the date of Birth with a String provided.
+     * @param dateOfBirth to be as a String
+     */
     public void setDateOfBirth(String dateOfBirth) {
-        if(dateOfBirth.length() > 0) {
+        logger.finer("Trying to set of birth with the String " + dateOfBirth + " provided");
+        if (dateOfBirth.length() > 0) {
+
             String[] date = dateOfBirth.split("\\.");
             this.dateOfBirth = LocalDate.of(Integer.valueOf(date[2]), Integer.valueOf(date[1]), Integer.valueOf(date[0]));
+            logger.fine("");
+            logger.fine("Date of birth of" + getName() + " has been set to " + dateOfBirth);
         } else {
+            logger.warning("Date of birth of " + getName() + " could not be set, leaving at null");
             dateOfBirth = null;
         }
     }
 
+    /**
+     * Method that sets date of Birth with a LocalDate provided
+     *
+     * @param dateOfBirth parameter given as LocalDate
+     */
     public void setDateOfBirth(LocalDate dateOfBirth) {
+        logger.fine("Setting date of birth of" + getName() + "with provided LocalDate: " + dateOfBirth);
         this.dateOfBirth = dateOfBirth;
     }
 
+    /**
+     * Override of equals method to compare participants against each other
+     *
+     * @param participant
+     * @return true if equals, false if not
+     */
     @Override
     public boolean equals(Participant participant) {
+        logger.fine("Comparing " + participant + " with " + this);
         return getClass().equals(participant.getClass()) && toString().toLowerCase().equals(participant.toString().toLowerCase());
     }
 
+    /**
+     * Override of the change method to change a Participant with a new one
+     *
+     * @param participant the new participant to be added
+     */
     @Override
     public void change(Participant participant) {
+        logger.fine("changing the current Player " + this + "with " + participant.getName());
         Player player = (Player) participant;
+
         setDateOfBirth(player.getDateOfBirth());
         setPhoneNumber(player.getPhoneNumber());
     }