Laying unknown number of components in a JPanel

Question

Hi all,
I am trying to lay in several components (JLabels) in a JPanel with a GridBagLayout. I only know the number of elements at runtime, so I use a for loop to build the panel. The labels are visible at the screen, but the problem is that I want them to be set vertically and they are all on the same line, here's my code, do anyone know what's wrong with it?
import java.util.Vector;
import javax.swing.*;
import java.awt.*;
public class MSPanel extends JPanel
private int nbLines;
private Vector ms = new Vector();
private Vector labels = new Vector();
private JScrollBar bar = new JScrollBar();
private GridBagLayout gbLayout = new GridBagLayout();
public MSPanel(int nbLines)
this.nbLines = nbLines;
try
jbInit();
catch(Exception e)
e.printStackTrace();
private void addLine(int i)
labels.add(new JLabel());
((JLabel)labels.lastElement()).setOpaque(true);
((JLabel)labels.lastElement()).setBackground(Color.white);
((JLabel)labels.lastElement()).setText("a line");
this.add(((JLabel)labels.lastElement()),new GridBagConstraints(0, i,1, 1, 1.0, 0.0, GridBagConstraints.WEST, GridBagConstraints.HORIZONTAL,new Insets(0,0,0,0), 0, 0));
private void jbInit() throws Exception
for (int i = 0; i < nbLines; i++)
addLine(i);
}

Answer 1

It seems that no one answer this topic so I'll try to explain it better, my problem is that the labels are all on the same line. That's not what I want, I want each label on a different line. It's seems that the code where I place the labels in the panel doesn't work. Does anybody know why?