JSP: How do display list of objects in jsp table?

Question

sorry that my question my confuse you, let me explain more.
in my java class, have method : public List retrieveAllVacancies(); and it returns a list of available vacancies.
on my jsp page, i want to display the vicancies in the table have 3 rows:
vacancy title  |  location  |  contract type
should i use some form of for loop or iterator to get the vacancies in the list? how does the jsp page get the list of objects?
anyone can help me? thanks

Answer 1

i found out the actual thing i look for is how to pass the vector to the jsp page.
<table>                                                                                                    
    <%
         Vacancy vacancy= new Vacancy();
        Vector allVacancies = new Vector();
        *//allVacancies = (java.util.Vector)request.getAttribute("allVacancies");*
        if(allVacancies.size() == 0) 
            out.print("<br><br><br>     There are no vacancies available!!");
        else
    %>
    <tr>
        <td>Vacancy Title</td>
        <td>Contract Type</td>
        <td>Location</td>
    </tr>
    <%
        for (int i=0;i<allVacancies.size();i++)
            vacancy = (Vacancy)allVacancies.get(i);
     %>
    <tr>
        <td><% out.print(vacancy.getVacancyTitle());%></td>
        <td><% out.print(vacancy.getContractType());%></td>
        <td><% out.print(vacancy.getVacancyLocation()); %></td>
    </tr>
<%
%>
</table>*//allVacancies = (java.util.Vector)request.getAttribute("allVacancies");*
if i have this line, when i open the jsp page it will gives NullPoniterException.
the following was what i found for the similar problem,
You can add the Vector to the HttpSession with_
session.setAttribute(String name, Object value)_
or to the ServletRequest with_
request.setAttribute(String name, Object value)._
In the other JSP, retrieve the value with_
session.getAttribute(String name)_
or to the ServletRequest with_
request.getAttribute(String name)._
but i tried to do in this way it didn't work. for sure i didn't do it correctly. could anybody give bit more explanation about how to pass the Vector to the jsp page?
any help would be appreciated.