added Server methods

src/xyz/nextn/Server.java

@@ -1,4 +1,32 @@
 package xyz.nextn;
 
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.net.ServerSocket;
+import java.net.Socket;
+
 public class Server {
+    private ServerSocket serverSocket;
+
+    public void start(int port) throws IOException {
+        serverSocket = new ServerSocket(port);
+        while (true)
+            new EchoClientHandler(serverSocket.accept()).start();
+    }
+
+    public void stop() throws IOException {
+        serverSocket.close();
+    }
+
+    private static class EchoClientHandler extends Thread {
+        private Socket clientSocket;
+        private PrintWriter out;
+        private BufferedReader in;
+
+        public EchoClientHandler(Socket socket) {
+            this.clientSocket = socket;
+        }
+    }
+
 }