I want to add event to the Icalendar threw caldav4j jar classes . Can I do that what would be the event request URL

Question

I want to add / retrieve event to the Icalendar threw caldav4j jar classes . Can I do that what would be the event request URL
Retrieve Events :
HttpClient http = new HttpClient();
    http.getState().setCredentials(new AuthScope("p06-caldav.icloud.com", 443,"https"), credentials);  
    http.getParams().setAuthenticationPreemptive(true);  
    HostConfiguration hostconfig = http.getHostConfiguration();
    hostconfig.setHost("p06-caldav.icloud.com");
    hostconfig.setHost("p06-caldav.icloud.com", 443, "https");
CalendarCalDAVReportMethod method = factory1.createCalendarCalDAVReportMethod();
method.setPath("/1809484432/calendars/");
  <C:calendar-query xmlns:C="urn:ietf:params:xml:ns:caldav">
<D:prop xmlns:D="DAV:">
<D:getetag/>
<D:allprop/>
<C:calendar-data>
<C:comp name="VCALENDAR">
<C:comp name="VEVENT"/>
</C:comp>
</C:calendar-data>
</D:prop>
<C:filter>
<C:comp-filter name="VCALENDAR"/>
</C:filter>
</C:calendar-query>
But Iam getting bad request . Can any body help me out on this

Answer 1

Still no luck...nor many helpful comments.
THis is what the top of my iTunes U screen looks like when I am in my course. I cannot see anything on the right hand side to click on that takes me to an edit page.
The following is taken from Penn State University related to drop boxes:
None of the stuff they refer to is on my screen - neither this one or any others.
Again, any help would be most appreciated.