How to show time in client/browser timezone in ADF

We can get the client timezone using javascript.
First we can get the time offset from client browser, and set it in a cookie.
Than we will access that cookie in our java code, and get the timezone based on that offset.
We will use this timezone in trininad-config.xml

trininad-config.xml settings for getting timezone

<time-zone>#{sessionBean.timeZone}</time-zone>

Than we need to add the getter method for timezone in our SessionBean class.

public TimeZone getTimeZone() {
    // code here
    // we will see the internal code in some time
}

Now, we will ass javascript in our jspx page, which will set time offset in cookie.

<af:resource type="javascript">
                  function setTimeZoneInCookie() {
                    var _myDate = new Date();
                    var _offset = _myDate.getTimezoneOffset();
                    document.cookie = "TIMEZONE_COOKIE=" + _offset; //Cookie name with value
                  }
                  setTimeZoneInCookie();     

                </af:resource>

Now, we will see the code for getTimeZone method in sessionBean

 
   public TimeZone getTimeZone() {
        Calendar now = Calendar.getInstance();
        String offsetStr = getOffsetFromCookie();
        if (offsetStr == null) {
            return now.getTimeZone();
        }
        Integer offset = Integer.parseInt(offsetStr);
        int minutes = Math.abs(offset) % 60;
        String timeZoneStr = "GMT+" + (-1)*offset/60 + ":" + ((minutes < 10) ? "0" + minutes : minutes); // e.g. GMT + 5:30
        TimeZone tz = TimeZone.getTimeZone(timeZoneStr);
        return tz;
    }


    private String getOffsetFromCookie() {
        FacesContext vFacesContext = FacesContext.getCurrentInstance();
          ExternalContext vExternalContext = vFacesContext.getExternalContext();
          Map vRequestCookieMap = vExternalContext.getRequestCookieMap();
          javax.servlet.http.Cookie vMyCookie = (javax.servlet.http.Cookie)vRequestCookieMap.get("TIMEZONE_COOKIE");
          if (vMyCookie != null)
          {
               return vMyCookie.getValue();
          }
        return null;
    }