Help creating an array from a list of vector item

Question

I am writing a Email Handling class that uses an Email class that I have already written. The spec requires me to (A.) Create a DisplayEmail(Email[] e) method that takes and array of email messages and displays them in the terminal window. And then (B) to create some retrieval methods ie: Email [] RetrieveSubject(String searchValue) which "will allow me to retrieve objects from the data structure created in (A.)and sorts them.
I wonder if you could give my some advice on how to implement this? I have used a Vector to store the emails. Here is what I have so far. . From what I understand I am suppose to create array methods for all of these tasks. Don't know where to begin, can u help please. I've created a vector to store the emails, but I am not sure about the array method bit. As you can see all of my methods are standard and I think they need to be arrays. Please Help
import java.util.*;
public class EmailHandler{
private Vector emails;
public EmailHandler(){
     emails = new Vector();
public EmailHandler(int size){
     emails= new Vector(size);
public void addEmail(Email e){
     emails.addElement(e);
public void displayEmail(Email de)
public void displayArrayOfEmails(Email[] ea)
public Email RetrieveSender(String searchSender)
     Email thisEmail;
     //look through vector for search element
     if(emails.size()>0){
          for (int i=0;i<emails.size();i++){
               //take emails in turn search for subject
               thisEmail = (Email) emails.elementAt(i);
               //check subject against search value input
               if(thisEmail.getSender().equalsIgnoreCase(searchSender))          {
                    return thisEmail;
     }     //if you find yourself here, no subject is found
          return null;
public Email RetrieveRecipient(String searchRecipient)
     Email thisEmail;
     //look through vector for search element
     if(emails.size()>0){
          for (int i=0;i<emails.size();i++){
               //take emails in turn search for subject
               thisEmail = (Email) emails.elementAt(i);
               //check subject against search value input
               if(thisEmail.getRecipientName().equalsIgnoreCase(searchRecipient))          {
                    return thisEmail;
     }     //if you find yourself here, no subject is found
          return null;
public Email RetrieveSubject(String searchSubject)
     Email thisEmail;
     //look through vector for search element
     if(emails.size()>0){
          for (int i=0;i<emails.size();i++){
               //take emails in turn search for subject
               thisEmail = (Email) emails.elementAt(i);
               //check subject against search value input
               if(thisEmail.getSubject().equalsIgnoreCase(searchSubject))          {
                    return thisEmail;
     }     //if you find yourself here, no subject is found
          return null;

Answer 1

i've anwered your question in your crosspost over here:
http://forum.java.sun.com/thread.jsp?forum=31&thread=472997&tstart=0&trange=30