problem in GridBagConstraints.fill

[Punit Jain]

GridBagConstraints.fill is not working...
here is my code..

import javax.swing.*;
import java.awt.*;
public class CustomerLayout extends JFrame
{
	JPanel panel;
	JLabel labelCustName, labelCustNo, labelCustSex, labelCustAge;
	JTextField textCustName, textCustNumber, textCustAge;
	JComboBox comboCustSex;
	GridBagLayout gbLayout;
	GridBagConstraints gbc;
	public CustomerLayout()
	{
		gbLayout = new GridBagLayout();	
		gbc = new GridBagConstraints();
		panel = new JPanel();
	
		panel.setLayout(gbLayout);
		labelCustName = new JLabel("Customer Name");
		labelCustNo = new JLabel("Customer Number");
		labelCustSex = new JLabel("Customer Sex");
		labelCustAge = new JLabel("Age");
		textCustName = new JTextField(30);	
		textCustNumber = new JTextField(15);
		textCustAge = new JTextField(2);
		String sex[] = {"Male","Female"};
		comboCustSex = new JComboBox(sex);
		comboCustSex.setPreferredSize(new Dimension(100,20));
		gbc.anchor = GridBagConstraints.NORTHWEST;
		gbc.gridx = 1;
		gbc.gridy = 5;
		gbc.insets = new Insets(5,5,5,5);
		gbc.fill = GridBagConstraints.HORIZONTAL;
		gbLayout.setConstraints(labelCustName,gbc);
		panel.add(labelCustName);
		gbc.anchor = GridBagConstraints.NORTHWEST;
		gbc.gridx = 4;
		gbc.gridy = 5;
		gbLayout.setConstraints(textCustName,gbc);
		panel.add(textCustName);

		gbc.gridx = 1;
		gbc.gridy = 6;	
		gbLayout.setConstraints(labelCustNo,gbc);
		panel.add(labelCustNo);

		gbc.gridx = 4;
		gbc.gridy = 6;	
		gbLayout.setConstraints(textCustNumber,gbc);
		panel.add(textCustNumber);

		gbc.gridx = 1;
		gbc.gridy = 7;	
		gbLayout.setConstraints(labelCustSex,gbc);
		panel.add(labelCustSex);

		gbc.gridx = 4;
		gbc.gridy = 7;
		gbLayout.setConstraints(comboCustSex,gbc);
		panel.add(comboCustSex);

		this.add(panel, BorderLayout.NORTH);
		this.setSize(500,200);	
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);		
	}	
	public static void main(String args[])
	{
		CustomerLayout cl = new CustomerLayout();
	}
}

when i m maximizing my JFrame all of my components are coming to center they are not filling the horizontal space..
i mean instead of filling the remaining horizontal space they are coming to center with same size..
although i used

		gbc.fill = GridBagConstraints.HORIZONTAL;

what i m doing wrong or what else i need to do to fill the horizontal space??

[Darryl Burke]

That's not what fill does. Read the API. Also read up on weightx and weighty.

[Michael Dunn]

> Also read up on weightx and weighty.

he won't.

in his other topic exactly the same advice was given for exactly the same problem.