Trouble Displaying Buttons in aGUI

Question

Hello There,
I am writing a small GUI and have attempted to add a panel to the foot of my JFrame and then add buttons to the panel using a GridLayout. However the buttons just dont show up. below is the code. If anyone could help me I would be most grateful
* Validate.java
* Created: Mon Apr 24 13:02:50 2006
* @author <a href="mailto:Samuel@EL-DIABLO"></a>
* @version
import java.text.*;
import java.awt.font.*;
import javax.swing.JFrame;
import java.lang.*;
import java.awt.*;
import javax.swing.JRadioButton;
import javax.swing.JButton;
import javax.swing.JSlider;
import javax.swing.*;
import java.awt.event.*;
import java.util.*;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.Event;
import java.lang.Object;
import java.lang.Object;
import javax.swing.border.*;
import java.io.*;
public class Validate extends JFrame implements ActionListener {
    Container contentPane;
    private JPanel usersPanel, opponentsPanel, statsPanel, bottomPanel;
    private JButton deal,call,bet,raise,fold;
    private String pocketrank = "";
    private BettingAid usersbettingaid;
    private BettingAid opponentsbettingaid;
    private PocketHand usershand;
    private PocketHand opponentshand;
    private CommunityHand ch;
    private PokerHand full;
    private EvaluateHand evaluateusers;
    private EvaluateHand evaluateopponents;
    public Validate() {
     contentPane = getContentPane();
     setSize(306,382);
     setTitle("Validate The Mother ...");
     setResizable(false);
     setVisible(true);
     setDefaultCloseOperation(EXIT_ON_CLOSE);
     usersPanel = new JPanel();
     usersPanel.setBackground(Color.WHITE);
     usersPanel.setBorder(BorderFactory.createTitledBorder("Users Hand"));
     usersPanel.setBounds(new Rectangle (0,0,150,150));
     opponentsPanel = new JPanel();
     opponentsPanel.setBackground(Color.WHITE);
     opponentsPanel.setBorder(BorderFactory.createTitledBorder("Opponents Hand"));
     opponentsPanel.setBounds(new Rectangle (0,150,150,150));
     statsPanel = new JPanel();
     statsPanel.setBackground(Color.WHITE);
     statsPanel.setBorder(BorderFactory.createTitledBorder("Game Stats"));
     statsPanel.setBounds(new Rectangle (150,0,150,300));
     deal = new JButton("deal");
     call = new JButton("call");
     bet = new JButton("bet");
     raise = new JButton("raise");
     fold = new JButton("fold");
     bottomPanel = new JPanel(new GridLayout(1,0));
     bottomPanel.setBackground(Color.WHITE);
     bottomPanel.setBorder(BorderFactory.createTitledBorder("Play Game"));
     bottomPanel.setBounds(new Rectangle (0,300,300,50));
     bottomPanel.add(deal);
     bottomPanel.add(call);
     bottomPanel.add(bet);
     bottomPanel.add(raise);
     bottomPanel.add(fold);
     //validate();
     contentPane.add(bottomPanel);
     contentPane.add(usersPanel);
     contentPane.add(opponentsPanel);
     contentPane.add(statsPanel);
     repaint();
     //pack();
    public void actionPerformed(ActionEvent e){
    public void paint(Graphics g){
     super.paint(g);
    public static void main(String [] args){
     Validate v = new Validate();
}// Validate

Answer 1

I've added everything by calling he setBounds() and specifying the co-ordinates that i want them positioned in. All the panles added to the contentPane show up fine and also in the correct place.However when i try to add buttons to one of these panels nothing shows up.