import java.util.Calendar;

 

String idcard = request.getParameter("idcard");//身份证

String chkidcard = idcard.toString().substring(6,10);//截取年

Calendar cal = Calendar.getInstance();

int year = cal.get(Calendar.YEAR);

String fcm = "0";

if(Integer.parseInt(idcard)+18>=year)

{

        fcm="1";

}