Date Comparison in OAF using Java

 String stDate   = null;   
Date   strtDate = null;
        Date   edDate   = null;
        String endDate  = null;
        try 
        {
            stDate = (poolCarVO.getCurrentRow().getAttribute("StartDate").toString());
            SimpleDateFormat         dateFormat       = new SimpleDateFormat("yyyy-MM-dd");
            endDate =  poolCarVO.getCurrentRow().getAttribute("EndDate").toString();
            strtDate = (Date)new Date(dateFormat.parse(stDate).getTime()+1);
            edDate = (Date)new Date(dateFormat.parse(endDate).getTime()+1);
            System.out.println("Inside ReqCreationCO startDate  --> "   + strtDate+" endDate "+edDate);
         }
         catch (Exception e)
         {
             System.out.println("startDate Exc  --> "   +   e);
             pageContext.writeDiagnostics(this , "startDate Exc  --> "   +   e , 4);
         }
        if(strtDate.after(edDate))
        {
            System.out.println("Inside ReqCreationCO startDate  --> "   + strtDate+" endDate "+edDate);
            throw new OAException("Start Date Should be Greater Than End Date!",OAException.ERROR);
        }
        else
        {
            System.out.println("Inside ReqCreationCO Checking the Else Logic---- Works fine  --> "   + strtDate+" endDate "+edDate);
            
        }