diff --git a/ws2012/P2P/uebungen/4/src/network/Network.java b/ws2012/P2P/uebungen/4/src/Main.java
similarity index 58%
rename from ws2012/P2P/uebungen/4/src/network/Network.java
rename to ws2012/P2P/uebungen/4/src/Main.java
index bbba1c04..abffa821 100644
--- a/ws2012/P2P/uebungen/4/src/network/Network.java
+++ b/ws2012/P2P/uebungen/4/src/Main.java
@@ -1,5 +1,3 @@
-package network;
-
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStreamReader;
@@ -7,9 +5,9 @@ import java.util.HashMap;
 import java.util.Map;
 import java.util.logging.LogManager;
 
-import peer.Node;
+import node.Node;
 
-public class Network {
+public class Main {
 
 	public static Map<String, Node> nodes = new HashMap<String, Node>();
 
@@ -32,10 +30,7 @@ public class Network {
 			e.printStackTrace();
 		}
 
-		// int delay = 1000;
-
-		Node a = new Node();
-		nodes.put("a", a);
+		nodes.put("a", new Node());
 
 		BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
 		String s;
@@ -65,47 +60,5 @@ public class Network {
 				System.out.println("No such node.");
 			}
 		}
-
-		// try {
-		// Node b = a.spawn();
-		// Thread.sleep(delay);
-		//
-		// Node c = a.spawn();
-		// Thread.sleep(delay);
-		//
-		// Node d = a.spawn();
-		// Thread.sleep(delay);
-		//
-		// // Node ba = b.spawn();
-		// // Thread.sleep(delay);
-		// //
-		// // Node bb = b.spawn();
-		// // Thread.sleep(delay);
-		// //
-		// // Node bc = b.spawn();
-		// // Thread.sleep(delay);
-		// //
-		// // Node bd = b.spawn();
-		// // Thread.sleep(delay);
-		// //
-		// // Node be = b.spawn();
-		// // Thread.sleep(delay);
-		//
-		// a.leave();
-		// Thread.sleep(delay);
-		//
-		// b.leave();
-		// Thread.sleep(delay);
-		//
-		// c.leave();
-		// Thread.sleep(delay);
-		//
-		// d.leave();
-		//
-		// } catch (IOException e) {
-		// e.printStackTrace();
-		// } catch (InterruptedException e) {
-		// e.printStackTrace();
-		// }
 	}
-}
+}
\ No newline at end of file
diff --git a/ws2012/P2P/uebungen/4/src/common/MessageType.java b/ws2012/P2P/uebungen/4/src/node/MessageType.java
similarity index 93%
rename from ws2012/P2P/uebungen/4/src/common/MessageType.java
rename to ws2012/P2P/uebungen/4/src/node/MessageType.java
index 3f2dbe8e..8637a0bf 100644
--- a/ws2012/P2P/uebungen/4/src/common/MessageType.java
+++ b/ws2012/P2P/uebungen/4/src/node/MessageType.java
@@ -1,4 +1,4 @@
-package common;
+package node;
 
 public class MessageType {
 	public final static byte INVITE = 7;
diff --git a/ws2012/P2P/uebungen/4/src/peer/Node.java b/ws2012/P2P/uebungen/4/src/node/Node.java
similarity index 94%
rename from ws2012/P2P/uebungen/4/src/peer/Node.java
rename to ws2012/P2P/uebungen/4/src/node/Node.java
index 6f549ba5..f10a7a2e 100644
--- a/ws2012/P2P/uebungen/4/src/peer/Node.java
+++ b/ws2012/P2P/uebungen/4/src/node/Node.java
@@ -1,4 +1,4 @@
-package peer;
+package node;
 
 import java.io.IOException;
 import java.net.InetSocketAddress;
@@ -9,8 +9,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.logging.Logger;
 
-import common.MessageType;
-
 public class Node {
 
 	private final static Logger LOGGER = Logger.getLogger(Node.class.getName());
@@ -108,7 +106,6 @@ public class Node {
 						putAddrInBuf(buf, neighbors.get(j));
 						channel.send(buf, neighbors.get(i));
 					} catch (IOException e) {
-						// TODO Auto-generated catch block
 						e.printStackTrace();
 					}
 				}
@@ -136,10 +133,6 @@ public class Node {
 		}
 	}
 
-	public boolean hasNeighbors() {
-		return (this.neighbors.size() > 0);
-	}
-
 	public boolean hasNeighbor(SocketAddress adr) {
 		for (SocketAddress n : neighbors) {
 			if (n.toString().equals(adr.toString())) {
@@ -193,7 +186,7 @@ public class Node {
 						case MessageType.NEW_NEIGHBOR:
 							StringBuilder theAddr = new StringBuilder();
 
-							// Read 4 Bytes and 1 Int
+							// Read 4 Bytes and 1 int
 							for (int i = 0; i < 4; i++) {
 								theAddr.append(buf.get());
 								if (i < 3)
@@ -213,10 +206,6 @@ public class Node {
 									+ receivedFrom.toString()
 									+ " received new neighbor:"
 									+ new_neighbor.toString());
-
-							// TODO: maybe send PING to new neighbor and expect
-							// wait to get a PONG
-
 							break;
 
 						default:
@@ -224,7 +213,6 @@ public class Node {
 									+ " received unknown command from "
 									+ receivedFrom.toString() + ": "
 									+ messageType + new String(buf.array()));
-
 						}
 					} else {
 						try {
@@ -244,4 +232,4 @@ public class Node {
 			running = false;
 		}
 	}
-}
+}
\ No newline at end of file