code: public static int schemeToDefaultPort(final String scheme) {
  		if(scheme.equals(HTTP_SCHEME)) {
  			return 80;
  		}
  		if(scheme.equals(HTTPS_SCHEME)) {
  			return 443;
  		}
  		if(scheme.equals(FTP_SCHEME)) {
  			return 21;
  		}
  		if(scheme.equals(RTSP_SCHEME)) {
  			return 554;
  		}
  		if(scheme.equals(MMS_SCHEME)) {
  			return 1755;
  		}
  		return -1;
  	}
docs: Return the default port for the scheme String argument, if known.
  @param scheme String scheme, including '://', as in, "http://", "ftp://"
  @return the default port for the scheme, or -1 if the scheme isn't known.