how to get i month before date from current date in java.my periodtype is month.os iwant 1 month before date from start date
<pre><code>if(request.getParameter("PeriodType")==""){
                if(request.getParameter("startdate")!=null)
                    StartDate = request.getParameter("startdate");
                if(request.getParameter("endDate")!=null)
                    EndDate = request.getParameter("endDate");
</code></pre>
