How to add HTTPS to existing web service that uses HTTP.

Hello!  I have basic web services application that java clients connect to the cache web services.  Using the browser, the user enters in the following url.

http://localhost:57772/csp/foia/%25SOAP.WebServiceInvoke.cls?CLS=SOAPFoia.SOAPServiceFoiaWeb&OP=FoiaApp30
'

which runs a soap method called FoiaApp30.   I am not sure how to add https  security to the web service calls.  I have reviewed documentation pertaining configuring SST/TTL configuration and other information.   Can somebody please help me out on what I need to do?   If I change the url  from http to https, the web service class will not work.  The web service class is similar to the following example.   Also if I configure SST/TTL in the configuration setting under management section, I am not sure how to add the information to the web service.

Class MyApp.StockService Extends %SOAP.WebService
{

/// Name of the WebService.
Parameter SERVICENAME = "StockService";

/// TODO: change this to actual SOAP namespace.
/// SOAP Namespace for the WebService
Parameter NAMESPACE = "http://tempuri.org";

/// Namespaces of referenced classes will be used in the WSDL.
Parameter USECLASSNAMESPACES = 1;

/// This method returns tomorrow's price for the requested stock
Method Forecast(StockName As %String) As %Integer [WebMethod]
{
    // apply patented, nonlinear, heuristic to find new price
    Set price = $Random(1000)
    Quit price
}
}