SSL SOCKET JAVA

I have to do an exercise that does the following:

  

Establish connection between Server and Client through SSL socket. The   The first thing they do is introduce themselves and verify that they are trustworthy   through certificates that I made with Keytool de java. ( One for   the certificate and another for the server)

And for now I have this:

public class SSLClient {

    //aquí heu de ficar les vostres dades
 private static String CLAU_CLIENT = "C:\Program Files (x86)\Java\jre1.8.0_161\bin\client_ks";
 private static String CLAU_CLIENT_PASSWORD = "456456";



 public static void main(String[] args) throws Exception {
  //Estableix la key store per validar el certificat del servidor.

  System.setProperty("javax.net.ssl.trustStore", CLAU_CLIENT);
  System.setProperty("javax.net.ssl.trustStorePassword", CLAU_CLIENT_PASSWORD);

  try{
      SSLSocketFactory sslFactory = (SSLSocketFactory) SSLSocketFactory.getDefault();
      SSLSocket CliSocket =(SSLSocket) sslFactory.createSocket("localhost", 4043);

       Scanner reader = new Scanner (System.in);      
      PrintStream writer = new PrintStream(CliSocket.getOutputStream());

      System.out.println("Deja una linea blanca para acabar:");
      String text = reader.nextLine();
      while (!text.equals("")) {
        writer.println(text);
        writer.flush();
        text = reader.nextLine();
      }
      writer.println("<<FI>>");
      writer.flush();
      CliSocket.close();      
    } catch (Exception ex) {
      System.out.println("Error en les comuncacions: " + ex);
    }
    }
 }




 //private Socket clienteSinCertificado() throws Exception {

 //}

 //private Socket clienteConCertificado() throws Exception {

 //}
//}

SERVER CLASS

public class SSLServer extends Thread {
 private Socket socket;

 public SSLServer(Socket socket) {
  this.socket = socket;
 }



 private static String SERVIDOR_CLAU = "C:\Program Files (x86)\Java\jre1.8.0_161\bin\server_ks";
 private static String SERVIDOR_CLAU_PASSWORD = "123123";

 public static void main(String[] args) throws Exception {


    System.setProperty("javax.net.ssl.keyStore", SERVIDOR_CLAU);
    System.setProperty("javax.net.ssl.keyStorePassword", SERVIDOR_CLAU_PASSWORD);


     try {
      SSLServerSocketFactory sslFactory = (SSLServerSocketFactory) SSLServerSocketFactory.getDefault();
      SSLServerSocket srvSocket = (SSLServerSocket) sslFactory.createServerSocket(4043);
      new SSLServer(srvSocket.accept()).start();
      int numClient = 1;

      while (true) {
        SSLSocket CliSocket = (SSLSocket) srvSocket.accept();

        Scanner reader = new Scanner (CliSocket.getInputStream());      

        String text = reader.nextLine();
        while (!text.equals("<<FIN>>")) {
          System.out.println("[Client " +numClient + "] " + text);
          System.out.flush();
          text = reader.nextLine();
        }
        System.out.println("[Client " +numClient + "] cerrando conexión...");
        CliSocket.close();
        numClient++;
      }
    } catch (Exception ex) {
      System.out.println("Error en las comunicaciones: " + ex);
    }

  }

 public void run() {
    try {
      BufferedReader br = new BufferedReader(new InputStreamReader(socket.getInputStream()));
      PrintWriter pw = new PrintWriter(socket.getOutputStream());
      String data = br.readLine();
      pw.println("Conectando");
      pw.close();
      socket.close();
    } catch (IOException ioe) {
    }
 }

}

I get the following error:

  

Communicacions error: java.net.ConnectException: Connection   refused: connect

     

java.net.SocketException: java.security.NoSuchAlgorithmException:   Error constructing implementation (algorithm: Default, provider:   SunJSSE, class: sun.security.ssl.SSLContextImpl $ DefaultSSLContext) at   javax.net.ssl.DefaultSSLServerSocketFactory.throwException (SSLServerSocketFactory.java:160)     at   javax.net.ssl.DefaultSSLServerSocketFactory.createServerSocket (SSLServerSocketFactory.java:173)     at ioc.dam.m9.uf1.eac3.b2.SSLServer.main (SSLServer.java:53) Caused   by: java.security.NoSuchAlgorithmException: Error constructing   implementation (algorithm: Default, provider: SunJSSE, class:   sun.security.ssl.SSLContextImpl $ DefaultSSLContext) at   java.security.Provider $ Service.newInstance (Provider.java:1617) at   sun.security.jca.GetInstance.getInstance (GetInstance.java:236) at   sun.security.jca.GetInstance.getInstance (GetInstance.java:164) at   javax.net.ssl.SSLContext.getInstance (SSLContext.java:156) at   javax.net.ssl.SSLContext.getDefault (SSLContext.java:96) at   javax.net.ssl.SSLServerSocketFactory.getDefault (SSLServerSocketFactory.java:113)     at ioc.dam.m9.uf1.eac3.b2.SSLServer.main (SSLServer.java:52) Caused   by: java.security.PrivilegedActionException:   java.io.FileNotFoundException: C: \ Program Files   (x86) \ Java \ jre1.8.0_161 \ bin \ server_ks (The system can not find   the specified route) at   java.security.AccessController.doPrivileged (Native Method) at   sun.security.ssl.SSLContextImpl $ DefaultManagersHolder.getKeyManagers (SSLContextImpl.java:822)     at   sun.security.ssl.SSLContextImpl $ DefaultManagersHolder. (SSLContextImpl.java:758)     at   sun.security.ssl.SSLContextImpl $ DefaultSSLContext. (SSLContextImpl.java:913)     at sun.reflect.NativeConstructorAccessorImpl.newInstance0 (Native   Method) at   sun.reflect.NativeConstructorAccessorImpl.newInstance (NativeConstructorAccessorImpl.java:62)     at   sun.reflect.DelegatingConstructorAccessorImpl.newInstance (DelegatingConstructorAccessorImpl.java:45)     at java.lang.reflect.Constructor.newInstance (Constructor.java:423)     at java.security.Provider $ Service.newInstance (Provider.java:1595)     ... 6 more Caused by: java.io.FileNotFoundException: C: \ Program Files   (x86) \ Java \ jre1.8.0_161 \ bin \ server_ks (The system can not find   the specified path) at java.io.FileInputStream.open0 (Native Method)     at java.io.FileInputStream.open (FileInputStream.java:195) at   java.io.FileInputStream. (FileInputStream.java:138) at   java.io.FileInputStream. (FileInputStream.java:93) at   sun.security.ssl.SSLContextImpl $ DefaultManagersHolder $ 2.run (SSLContextImpl.java:826)     at   sun.security.ssl.SSLContextImpl $ DefaultManagersHolder $ 2.run (SSLContextImpl.java:823)     ... 15 more

I'm pretty lost with the subject and maybe I have some bad things .. but I do not know what else to do: (

thanks!