class Server extends Thread {

         public Server(){
		try {
			sslserversocketfactory = (SSLServerSocketFactory)SSLServerSocketFactory.getDefault();
			server = (SSLServerSocket) sslserversocketfactory.createServerSocket(7000);
			listener = new Thread(this);
			listener.start();
		} catch (Exception e) {
			e.printStackTrace();
		}
         }
         public void run() {
		try {
			while (true) {
                               SSLSocket socket = (SSLSocket)server.accept());
                               socket.setKeepAlive(true);
                               PrintWriter out = SocketUtil.getWriter(socket);
                ...

}