adding comments as docu

client/ClientObject.java

@@ -11,8 +11,8 @@ public class ClientObject{
     public void startConnection(String ip, int port) {
         try{
             clientSocket = new Socket(ip, port);
-            out = new PrintWriter(clientSocket.getOutputStream(), true);
-            in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
+            out = new PrintWriter(clientSocket.getOutputStream(), true); // OutputStream vom Socket wird auf "out" gelegt
+            in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream())); // InputStream wird auf "in" gelegt
         }catch(Exception e){
             System.out.println("Error starting client connection");
             System.out.println(e);
@@ -20,10 +20,10 @@ public class ClientObject{
     }
 
     public String sendMessage(String msg) {
-        out.println(msg);
+        out.println(msg); // senden der msg über den outputstream des sockets
         String resp = "";
         try{
-           resp = in.readLine();
+           resp = in.readLine(); //lesen der antwort
         }catch(Exception e){
             System.out.println("Error reading message");
         }
@@ -31,8 +31,9 @@ public class ClientObject{
     }
 
     public void stopConnection() {
+        // schließen des sockets
         try{
-            in.close();
+            in.close(); 
             out.close();
             clientSocket.close();
         }catch(Exception e){

server/Service.java

@@ -8,41 +8,38 @@ import java.net.Socket;
 
 public class Service {
 
-
     private ServerSocket serverSocket;
     private Socket clientSocket;
     private PrintWriter out;
     private BufferedReader in;
 
     public void start(int port) {
-        try{
+        try {
+            // socket aufmachen
             serverSocket = new ServerSocket(port);
-        clientSocket = serverSocket.accept();
-        out = new PrintWriter(clientSocket.getOutputStream(), true);
-        in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
-        String greeting = in.readLine();
-            if ("Hallo from the other side!".equals(greeting)) {
-                out.println("hello client");
-            }
-            else {
-                out.println("unrecognised greeting");
-            }
-        }catch(Exception e){
+            clientSocket = serverSocket.accept();
+            out = new PrintWriter(clientSocket.getOutputStream(), true);
+            in = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
+            String greeting = in.readLine(); //input der AN den Server kommt
+            System.out.println("Client sent: ");
+            System.out.println(greeting);
+            out.println("hello client"); // output der VOM Server an den Client geht
+        } catch (Exception e) {
             System.out.println("Error starting");
             System.out.println(e);
         }
     }
 
     public void stop() {
-        try{
+        try {
             in.close();
             out.close();
             clientSocket.close();
             serverSocket.close();
-        }catch(Exception e){
+        } catch (Exception e) {
             System.out.println("Error stopping");
             System.out.println(e);
         }
     }
-    
+
 }