public static void tls(String tls){
    SSLContext context;

      try {
        System.out.println(SSLContext.getDefault().getProtocol());
        context = SSLContext.getInstance(tls);
        context.init(null, null, null);
        System.out.println(SSLContext.getDefault().getProtocol());
        System.setProperty("https.protocols", tls);
        SSLContext.setDefault(context);
        System.out.println(SSLContext.getDefault().getProtocol());
      } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
      }
}`

public static void login(){
    try {

         System.out.println("login()"+SSLContext.getDefault().getProtocol());
         String username = "userName";
         String password = "pass";
         String authEndPoint = "https://login.salesforce.com/services/Soap/u/8.0/";
         SoapBindingStub binding = null;
         binding = (SoapBindingStub)new SforceServiceLocator().getSoap();
         binding._setProperty(SoapBindingStub.ENDPOINT_ADDRESS_PROPERTY, authEndPoint);
         LoginResult rs = null;
         rs = binding.login(username, password);
         GetUserInfoResult userInfo =rs.getUserInfo();
         binding._setProperty(SoapBindingStub.ENDPOINT_ADDRESS_PROPERTY, rs.getServerUrl());
         } catch (RemoteException e) {
            System.out.println(e.getMessage());
         } catch (Exception e) {
            e.printStackTrace();
         }
}