GUI - Change contentpane when button pressed

[milk242]

Hi everyone

I'm trying to change what shows up in the contentpane depending on what button you press. Say you press a button labeled "Customer", it would add textfields to the content pane.

I thought I could just add the action int eh actionPerformed method but doesn't seem to work.

Thanks for your help!

public class ButtonDemo extends JFrame implements ActionListener
{
	public static final int WIDTH = 400;
	public static final int HEIGHT = 300;
	private JTextField nameField; 
	
	public ButtonDemo()
	{
		setSize(WIDTH, HEIGHT);
		WindowDestroyer listener = new WindowDestroyer();
		addWindowListener(listener);
		
		Container contentPane = getContentPane();
		contentPane.setBackground(Color.WHITE);
		
		contentPane.setLayout(new FlowLayout());
		
		JButton customerButton = new JButton("Customer");
		customerButton.addActionListener(this);
		contentPane.add(customerButton); 
	}
	
	public void actionPerformed(ActionEvent e)
	{
		String actionCommand = e.getActionCommand();
		Container contentPane = getContentPane();
		
		if (actionCommand.equals("Customer"))
		{
			nameField = new JTextField("Hi everyone");
			nameField.addActionListener(this);
			contentPane.add(nameField);
		}
		else
			System.out.println("Error in button interface.");
	}
}

[r035198x]

Call pack() after adding stuff to the content pane.

[milk242]

Call pack() after adding stuff to the content pane.

Sorry for the noob question but how would I do that? What would I put in the parameter of the Window header?

[r035198x]

After

contentPane.add(nameField);

add

pack();

[milk242]

Thanks for the help!
but...

Do you know where I can read up more of the pack method? It sort of does what I want but I'll have more than 1 button on the window, each button should populate the content pane with new fields. The pack() method displays the field and when I press the button again, it'll duplicate the fields. Also it breaks the set size of the window.

[r035198x]

Better read up on Layout managers again then.Perhaps you could use CardLayout for this?