HI ., Following is my code

test.jsp

<%@page import="java.sql.*"%>
<%@taglib prefix="c" uri="/WEB-INF/c-rt.tld" %>

<%@page import="java.util.HashMap"%>
<%@page import="com.web.abc.integration.model.Domain"%>
<%@page import="com.web.abc.integration.model.Category"%>
<%@page import="com.web.abc.integration.dao.DomainDAO"%>

<%! HashMap<Integer,Domain>domainmap;
HashMap<Integer,Category>categorymap;
DomainDAO bdao;
Domain d;%>

<%
bdao=new DomainDAO();
bdao.getDBAcccess();
domainmap=bdao.getDomains(2);
session.setAttribute("domainmap",domainmap);

%>

test2.jsp

<%@page import="java.sql.*"%>
<%@taglib prefix="c" uri="/WEB-INF/c-rt.tld" %>

<%@page import="java.util.HashMap"%>
<%@page import="com.web.abc.integration.model.Domain"%>
<%@page import="com.web.abc.integration.model.Category"%>
<%@page import="com.web.abc.integration.dao.DomainDAO"%>
<%@page import="java.util.ArrayList"%>

<%! HashMap<Integer,Domain>domainmap;
HashMap<Integer,Category>categorymap;
DomainDAO bdao;
Domain d;

ArrayList<Domain>domainlist;
%>

<%
bdao=new DomainDAO();
bdao.getDBAcccess();
domainmap=bdao.getDomains(2);
session.setAttribute("domainmap",domainmap);

String domainnames[]=request.getParameterValues("selecteddomains");

domainmap=(HashMap<Integer,Domain>)session.getAttribute("domainmap");
domainlist=(ArrayList<Domain>)session.getAttribute("domainlist");

if(domainlist==null){
domainlist=new ArrayList<Domain>();
}

DomainDAO dDao=new DomainDAO();
dDao.setDomainmap(domainmap);
for(String domainname:domainnames){
domainlist.add(dDao.getdomain(domainname));
//domainlist.remove(dDao.getdomain(domainname));

}
session.setAttribute("domainlist",domainlist);

%>

My actual proble is as follows: Above code is working, but i want some modifications in it. And i am not getting it.

when i click on some checkbox of table"Table Containts" and submit ">>" button, then in "Total Selected Domains" table , it is displaying checked checkboxes. But at same time , whatever the displaying in "Total selected Domains", only that checkboxes should be checked in "Table Containts" simultaneously., So basically i want to avoid duplicate selection of same checkboxes. waiting for your reply. Thank you for yor help in advance