Just found the answer..Here is the sample code...I'll explain further if needed...

You can call the function like:

    pagedListMembers(lc,"cn=mygroup,ou=whatever");

void pagedListMembers(LdapContext lc,String groupRDN){       
        try{           
            final int pagesize = 1000;            
            /*
            // beware of DSA limiting search results and use range-qualifier
            // http://www.ietf.org/internet-drafts/draft-kashi-incremental-00.txt
            */
            int pageCount = 0;
            int returnedCount = m_PageSize;
           
            while (true){    
                // create range dynamically
                String[] currRange = new String[1];
                currRange[0] = "member;Range=" + String.valueOf(pageCount * m_PageSize) + "-" + String.valueOf((pageCount+1) * m_PageSize-1); 
               
                Attributes result = lc.getAttributes(groupRDN,currRange );
                // Tricky part             
                NamingEnumeration  searchranges = result.getIDs();
                String searchrange = searchranges.nextElement().toString(); 
                System.out.println("Handling suggested " + currRange[0] + " with returned " + searchrange);
                //                 
                Attribute member = result.get(searchrange);
                
                if (member == null)
                    return; // no members
                returnedCount = member.size();
                System.out.println( searchrange + " returned " +  returnedCount + " attributes.");
                NamingEnumeration results = member.getAll();                
                while (results != null && results.hasMoreElements()) {
                     Object o = results.nextElement();
                    // Actions of your choice
                }
                results.close();
                pageCount++;
            }
            
        } catch(Exception e){
            
            System.out.println(e.getMessage());
        }  
        
    }