Positioning items in a frame

Question

Can someone help me move the AM in my program so that it appears under the time. Also, does anyone know how to put zero,s on the clock when you have single digit numbers, e.g 10:01:03 instead of 10:1:3. Thank You!
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.JLabel;
class Grid extends Frame
{   static PrintWriter screen = new PrintWriter(System.out,true);
int hours, mins, secs, variable;
Calendar t = Calendar.getInstance();
final long DELAY = 1000;
JLabel timeLabel;
JLabel varLabel;
public Grid()
{   setLayout(new GridLayout(1,3));
hours = t.get(Calendar.HOUR_OF_DAY);
mins = t.get(Calendar.MINUTE);
secs = t.get(Calendar.SECOND);
variable = t.get(Calendar.AM_PM);
if(variable == 0)
varLabel = new JLabel("AM");
else
varLabel = new JLabel("PM");
timeLabel = new JLabel(hours+":"+mins+":"+secs);     
this.add(timeLabel);
this.add(varLabel);
private void pause(long DELAY){
try{
Thread.sleep(DELAY);
}catch(InterruptedException ie){System.err.println("Thread.sleep() error)" +ie);}
public void update()
{while(true)
{pause(DELAY);
Calendar c = Calendar.getInstance();
hours = c.get(Calendar.HOUR_OF_DAY);
mins = c.get(Calendar.MINUTE);
secs = c.get(Calendar.SECOND);
variable = c.get(Calendar.AM_PM);
if(variable == 0)
varLabel.setText("AM");
else
varLabel.setText("PM");
timeLabel.setText(hours+":"+mins+":"+secs);
class Clock
{ public static void main(String [] args)
{ Grid g = new Grid();
g.setSize(300, 300);
g.setTitle("Digital Clock");
g.setVisible(true);
g.addWindowListener
(new WindowAdapter()
{public void
     windowClosing(WindowEvent e)
     {System.exit(0);}
g.update();
}

Answer 1

see http://java.sun.com/j2se/1.4.2/docs/api/java/text/NumberFormat.html for information on Number Formatting (alternatively you could simply check if your digit is < 10 and add a 0 manually)
see http://java.sun.com/docs/books/tutorial/uiswing/layout/using.html to learn more about java layout managers (to specify which component should be placed where)