Request https

Bom dia pessoal,
Alguem sabe como conectar em uma pagina com protocolo de seguraca HTTPS ,
por exemplo:https://url.
Obs: a sua rede possui proxy.

No meu exemplo eu valido meu proxy e tento uma conexao segura, mas da erro de
proxy nao autorizado, nao estou conseguindo resolver.
Talvez haja outra forma se fazer, se algum puder ajudar agradeco.

Abraco.

String proxyPassword = "senha do proxy";
    String proxyUsername = "seu usuario";
    String proxyHost = "ip";
    String proxyPort = "porta";
    String connectionURL = https://nome da url ;

    //configuracao de proxy
    System.setProperty("https.proxyHost", proxyHost);
    System.setProperty("https.proxyPort", proxyPort);
    System.setProperty("https.proxySet", "true");

    System.setProperty("proxyHost", proxyHost);
    System.setProperty("proxyPort", proxyPort);
    System.setProperty("proxySet", "true");

    System.setProperty("http.proxyHost", proxyHost);
    System.setProperty("http.proxyPort", proxyPort);
    System.setProperty("http.proxySet", "true");

    //configuracao de seguranca
    System.setProperty("java.protocol.handler.pkgs", "com.sun.net.ssl.internal.www.protocol");
    java.security.Provider prov = new com.sun.net.ssl.internal.ssl.Provider();
    Security.addProvider(prov);
    //create the connection
    URL myURL = new URL(connectionURL);
    URLConnection myConnection = myURL.openConnection();

    String strUserpass = proxyUsername + ":" + proxyPassword;
    sun.misc.BASE64Encoder encodedLogin = new sun.misc.BASE64Encoder();
    String encodedPassword = encodedLogin.encode(strUserpass.getBytes());

    com.sun.net.ssl.HttpsURLConnection https = null;

    if (myConnection instanceof com.sun.net.ssl.HttpsURLConnection) {
       https = (com.sun.net.ssl.HttpsURLConnection)myConnection;
       https.setSSLSocketFactory(new SSLTunnelSocketFactory(System.getProperty("proxyHost"), System.getProperty("proxyPort")));
       //((com.sun.net.ssl.HttpsURLConnection) myConnection).setSSLSocketFactory(new     SSLTunnelSocketFactory(System.getProperty("proxyHost"), System.getProperty("proxyPort")));
     }
     // myConnection.setRequestProperty("Proxy-Authorization", "Basic " + encodedLogin);
     // myConnection.setRequestProperty("Authorization", "Basic " + encodedLogin);

     https.setRequestProperty("Https-Proxy-Authorization", "Basic " + encodedLogin);
     myConnection.setDoInput(true); 
     myConnection.setDoOutput(true);
     BufferedReader in;
     try {
       System.err.println("opening Input stream1");
       in = new BufferedReader(new InputStreamReader(myConnection.getInputStream()));
       String inputLine;
       System.err.println("Input stream is Open1");
     }catch (Exception e) {
       e.printStackTrace();
       System.out.println("oie");
     }

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