diff --git a/bin/C3PO.class b/bin/C3PO.class
index 5180443..174c0db 100644
Binary files a/bin/C3PO.class and b/bin/C3PO.class differ
diff --git a/bin/R2D2.class b/bin/R2D2.class
index c720f49..f50ae3f 100644
Binary files a/bin/R2D2.class and b/bin/R2D2.class differ
diff --git a/src/C3PO.java b/src/C3PO.java
index 9196d28..e915b08 100644
--- a/src/C3PO.java
+++ b/src/C3PO.java
@@ -5,23 +5,31 @@ import java.util.Arrays;
 import java.util.stream.Collectors;
 
 public class C3PO implements Robot {
-	//declaring
+	
     private int id;
     private String name;
     private boolean isPowerOn;
 
 
-    //returns id
+    /**
+     * @return id of the robot
+     */
     @Override
     public int getId() {
         return id;
     }
-    //returns name
+    
+    /**
+     * @return name of the robot
+     */
     @Override
     public String getName() {
         return name;
     }
-    //returns isPorwerOn true if it's false
+    
+    /**
+     * @return isPorwerOn true if it's false
+     */
     @Override
     public void triggerPowerSwitch() {
     if(isPowerOn==false){
@@ -32,18 +40,27 @@ public class C3PO implements Robot {
     }
     //tes test
     
-    //returns isPowerOn
+    /**
+     * @return isPowerOn
+     */
     @Override
     public boolean isPowerOn() {
         return isPowerOn;
     }
-    //creating a RobotException
+    
+    /**
+     * creating a RobotException getLastException
+     */
     @Override
     public RobotException getLastException() {
         return null;
     }
     
-    //speak method that returns the sorted and formated numbers from the array zahlen
+    /**
+     * speak method that returns the sorted and formated numbers from the array zahlen
+     * @param int[] zahlen Array of numbers for sorting
+     * @return sorted and formated numbers 
+     */
     @Override
     public String speak(int[] zahlen) throws RobotException {
 
@@ -52,9 +69,14 @@ public class C3PO implements Robot {
         return arrayFormatieren(sortiert);
     }
     
-    //method to format the result 
-    //Returns a Stream consisting of the elements of this stream,each boxed to an Integer and maps it into a String
-    //each element of the Stream is separated by ;
+    /**
+     * method to format the outcome
+     * Returns a Stream consisting of the elements of this stream,each boxed to an Integer 
+     * and maps it into a String
+     * each element of the Stream is separated by ","
+     * @param int[] zahlen Array of numbers to sort
+     * @return formated outcome
+     */
     private String arrayFormatieren(int[] zahlen){
         var ergebnis = Arrays.stream(zahlen)
                 .boxed()
@@ -63,7 +85,11 @@ public class C3PO implements Robot {
         return ergebnis;
     }
     
-    //method that sorts the array zahlen with the Selectionsort-Algorithmin in descending order
+    /**
+     * method that sorts the array zahlen with the Selectionsort-Algorithmin in descending order
+     * @param int[] zahlen Array of numbers for sorting
+     * @return array of numbers in descending order
+     */
     @Override
     public int[] think(int[] zahlen) throws RobotException {
         int n = zahlen.length;
diff --git a/src/Nexus6.java b/src/Nexus6.java
index 3a4f8bc..5906c64 100644
--- a/src/Nexus6.java
+++ b/src/Nexus6.java
@@ -6,7 +6,7 @@ import java.util.Arrays;
 import java.util.stream.Collectors;
 
 public class Nexus6 implements Robot {
-	//declaring and initializing
+	
 	private int id = 19281982;
     private String name = "pris";
     private boolean isPowerOn = false;
diff --git a/src/R2D2.java b/src/R2D2.java
index 12597aa..62e644b 100644
--- a/src/R2D2.java
+++ b/src/R2D2.java
@@ -5,23 +5,31 @@ import java.util.Arrays;
 import java.util.stream.Collectors;
 
 public class R2D2 implements Robot {
-	//declaring
+	
 	private int id;
     private String name;
     private boolean isPowerOn;
 
 
-    //returns id
+    /**
+     * @return id of the robot
+     */
     @Override
     public int getId() {
         return id;
     }
-    //returns name
+    
+    /**
+     * @return name of the robot
+     */
     @Override
     public String getName() {
         return name;
     }
-    //returns isPorwerOn true if it's false
+    
+    /**
+     * @return isPorwerOn true if it's false
+     */
     @Override
     public void triggerPowerSwitch() {
     if(isPowerOn==false){
@@ -30,17 +38,28 @@ public class R2D2 implements Robot {
         isPowerOn=false;
     }
     }
-    //returns isPowerOn
+    
+    /**
+     * @return isPowerOn
+     */
     @Override
     public boolean isPowerOn() {
         return isPowerOn;
     }
-    //creating a RobotException
+    
+    /**
+     * creating a RobotException getLastException
+     */
     @Override
     public RobotException getLastException() {
         return null;
     }
-    //speak method that returns the sorted and formated numbers from the array zahlen
+    
+    /**
+     * speak method that returns the sorted and formated numbers from the array zahlen
+     * @param int[] zahlen Array of numbers for sorting
+     * @return sorted and formated numbers 
+     */
     @Override
     public String speak(int[] zahlen) throws RobotException {
 
@@ -48,9 +67,15 @@ public class R2D2 implements Robot {
 
         return arrayFormatieren(sortiert);
     }
-    //method to format the result 
-    //Returns a Stream consisting of the elements of this stream,each boxed to an Integer and maps it into a String
-    //each element of the Stream is separated by ,
+    
+    /**
+     * method to format the outcome
+     * Returns a Stream consisting of the elements of this stream,each boxed to an Integer 
+     * and maps it into a String
+     * each element of the Stream is separated by ","
+     * @param int[] zahlen Array of numbers to sort
+     * @return formated outcome
+     */
     private String arrayFormatieren(int[] zahlen){
         var ergebnis = Arrays.stream(zahlen)
                 .boxed()
@@ -58,7 +83,11 @@ public class R2D2 implements Robot {
                 .collect(Collectors.joining(","));
         return ergebnis;
     }
-    //method that sorts the array zahlen with the Selectionsort-Algorithmin in ascending order
+    /**
+     * method that sorts the array zahlen with the Selectionsort-Algorithmin in ascending order
+     * @param int[] zahlen Array of numbers for sorting
+     * @return array of numbers in ascending order
+     */
     @Override
     public int[] think(int[] zahlen) throws RobotException {
         int n = zahlen.length;