Move Label From Down To Top The Frame?

Question

greetings all
i want to make something like movie credits
i have an empy frame and i have some labels
and i want when the frame runs labels move in turn from down to top
any ideas,how to do that?
thanks in advance

Answer 1

thanks Encephalopathic for the help
but i have just two questions about your code:
i don't understand what's DELTA_Y and what's it's function here:
if (y > 0)
          y -= DELTA_Y;
}and i have added another label and set it to be shown after the first label
but what happens is the opposite,i don't know why?
here's what i did:
import javax.swing.*;
import java.awt.*;
import javax.swing.Timer;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class test_timer
  private static final int Y_MAX = 300;
  protected static final int X_POS = 10;
  protected static final int DELTA_Y = 2;
  private static final int DELAY_TIME = 100;
  private static int y = Y_MAX;
  private static JPanel panel;
  public static void main(String[] args)
    JFrame frame = new JFrame("Credits");
    final JLabel label = new JLabel("Updating Component Test", JLabel.CENTER);
    final JLabel label2 = new JLabel("Statement Two", JLabel.CENTER);
    label.setFont(new Font("Courier New", Font.BOLD, 15));
    label.setSize(label.getPreferredSize());
    label.setLocation(X_POS, y);
    label.setForeground(Color.WHITE);
    label2.setFont(new Font("Courier New", Font.BOLD, 15));
    label2.setSize(label2.getPreferredSize());
    //i set the label2 to be down label1
    label2.setLocation(X_POS, y+25);
    label2.setForeground(Color.WHITE);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    panel = new JPanel();
    panel.setPreferredSize(new Dimension(2*Y_MAX, Y_MAX));
    panel.setLayout(null);
    panel.setBackground(Color.BLACK);
    panel.add(label);
    //i added label2 after label1
    panel.add(label2);       
    frame.add(panel);
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
    new Timer(DELAY_TIME, new ActionListener()
      public void actionPerformed(ActionEvent ae)
        if (y > 0)
          y -= DELTA_Y;
          label.setLocation(X_POS, y);
          //set the new location to be less than label1 location
          label2.setLocation(X_POS,y-40);
    }).start();
}