Fill JComboBox with Vector from database

Question

Hi there,
I have a problem with filling a JComboBox with data from a database. I can print the data in the console, but it seems to be impossible to do it in a ComboBox ...
I tried this:
* To change this template, choose Tools | Templates
* and open the template in the editor.
*package client;*
*import data.Raum;*
*import data.RaumImpl;*
*import java.net.MalformedURLException;*
*import java.rmi.Naming;*
*import java.rmi.NotBoundException;*
*import java.rmi.RemoteException;*
*import java.sql.SQLException;*
*import javax.swing.JComboBox;*
*import javax.swing.JFrame;*
*import java.util.Vector;*
*import verwaltung.*;
import server.DraServer;
* @author philipp
public class ComboBox extends JFrame
    ComboBox(String title) throws RemoteException, SQLException, NullPointerException, MalformedURLException, NotBoundException {
    super(title);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    DraVerwaltung verwaltung = (DraVerwaltung) Naming.lookup ("rmi://localhost/DRA");
    System.out.println("Remote object created...");
    Vector raeume = verwaltung.RaumAusleser();
    Raum r;
    for (int i = 0; i < raeume.size(); i++)
        r = (Raum)raeume.elementAt(i);
//      System.out.println ("Raum: " + r.getRaumname());
//      System.out.println ("Raumid: " + r.getIdRaum());
     JComboBox jcb = new JComboBox(r.getRaumname());
    getContentPane().add(jcb);
    setSize(200, 50);
    setVisible(true);      
  public static void main(String[] args) throws RemoteException, SQLException, NullPointerException, MalformedURLException, NotBoundException {
    new ComboBox("Test");
}In this case I get the following for JComboBox (line 44):
"cannot find symbol
symbol: constructor JComboBox(java.lang.string)
location: class javax.swing.JComboBox"
I tried:
-> change "JComboBox jcb = new JComboBox(r.getRaumname());" to "JComboBox jcb = new JComboBox(raeume);"
then I got the JComboBox, but with ... I don't know how to describe the content. It seems like a (very long) reference.
All other tries can't be tested, because I got the problem with constructor again.
I'm happy for an early response.
Regards

Answer 1

Now, it works!
It looks like that:
* To change this template, choose Tools | Templates
* and open the template in the editor.
package client;
import data.Raum;
import data.RaumImpl;
import java.net.MalformedURLException;
import java.rmi.Naming;
import java.rmi.NotBoundException;
import java.rmi.RemoteException;
import java.sql.SQLException;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import java.util.Vector;
import verwaltung.*;
import server.DraServer;
* @author philipp
public class ComboBox extends JFrame
    ComboBox(String title) throws RemoteException, SQLException, NullPointerException, MalformedURLException, NotBoundException {
    super(title);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    DraVerwaltung verwaltung = (DraVerwaltung) Naming.lookup ("rmi://localhost/DRA");
    System.out.println("Remote object created...");
    Vector raeume = verwaltung.RaumAusleser();
    Raum r = new RaumImpl();
    Vector vJcb = new Vector();
    for (int i = 0; i < raeume.size();i++){
        r = (Raum)raeume.elementAt(i); 
        vJcb.add(r.getRaumname());
    JComboBox jcb = new JComboBox(vJcb);
    getContentPane().add(jcb);
    setSize(200, 50);
    setVisible(true);     
    public static void main(String[] args) throws RemoteException, SQLException, NullPointerException, MalformedURLException, NotBoundException {
       new ComboBox("Combo box Demo1");
}Thanks in advantage to all!