Java SE (Java Platform, Standard Edition)

Whenever i have created a GUI application, i have always extended JFrame. Encephalopathic showed me that i should be extending JFrame instead so that i dont subclass JFrame. This works really well now and it makes a lot of sense to do this. The only problem i am having with this layout now is where to put my JButtons. So far i have done the code like this:

import java.awt.image.BufferedImage;
import java.io.IOException;
import java.net.URL;
import javax.swing.*;
import java.util.*;
import java.awt.*; 
import java.awt.event.*;
import java.io.File; 
import javax.imageio.ImageIO;


 
public class Assignment2 extends JPanel
{
  private static final String FILE_PATH = "C:\\Documents and Settings\\Maureen\\My Documents\\My Pictures\\olympic.png"; 

  private JButton eventJButton;
  private BufferedImage image = null;
  
  
  public Assignment2()
  {
    try
    {
      image = ImageIO.read(new File(FILE_PATH));// load the image
    }
    
    catch (IOException e)
    {
      e.printStackTrace();
    }
    
    // set up the JPanel.
    JLabel titleLabel = new JLabel("LONDON 2012");
    titleLabel.setFont(titleLabel.getFont().deriveFont(Font.BOLD, 48));
    titleLabel.setForeground(Color.blue);
    JPanel titlePanel = new JPanel();
    titlePanel.setOpaque(false);
    titlePanel.add(titleLabel);
	
	eventJButton = new JButton();
	eventJButton.setText( "EVENTS" );
	eventJButton.addActionListener(
	new ActionListener() 
	 {
	    public void actionPerformed( ActionEvent event )
	    {
	       eventJButtonActionPerformed( event );
	    }
	
	 } 
	
	); 
	

    setPreferredSize(new Dimension(800, 590));
    setLayout(new BorderLayout());
    add(titlePanel, BorderLayout.NORTH);
    add(eventJButton, BorderLayout.SOUTH);
  }
  

  protected void paintComponent(Graphics g) //overriding paint method
  {
    super.paintComponent(g);
    if (image != null)
    {
      g.drawImage(image, 100, -50, this); //applying my image
    }
  }
 
   
  private static void createAndShowUI()
  {
    JFrame frame = new JFrame("Nerkesa");
    frame.getContentPane().add(new Assignment2()); // adding the JPanel to the JFrame here
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
      
  }
  
 private void eventJButtonActionPerformed( ActionEvent event )
   {
  

  }
  
  public static void main(String[] args)
  {
    java.awt.EventQueue.invokeLater(new Runnable()
    {
      public void run()
      {
        createAndShowUI();
      }
    });
  }
}

I added the JButton in the JPanel. I dont know if this is correct but it seems to work at the moment. The problem i am having is that when i try and set the size of this button, no changes are made. The only place it seems to let me make change to this button is when i add it to the JPanel

  add(eventJButton, BorderLayout.SOUTH);

But then this adds the button at the bottom of my application and the size is the whole width of my application. How can i make changes to this button in relation to its size?