BoxLayout quirk

[Eric Larsen]

Why does my my JLabel appear all the way on the right-hand side of my GUI?

The source code for the class:

package com.teslarobotics.gui;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class MultipleScreens {

	JFrame frame;
	JPanel login;
	JPanel loginFailed;
	JPanel loginSuccess;

	public static void main (String[] args) {

		MultipleScreens screens = new MultipleScreens();

	}

	public MultipleScreens () {

		frame = new JFrame("Multiple Screens");
		login = new JPanel();

		JTextField username = new JTextField(15);
		JLabel usernameLabel = new JLabel("Username: ");

		JTextField password = new JTextField(15);
		JLabel passwordLabel = new JLabel("Password: ");

		JButton loginButton = new JButton("Log in");
		//loginButton.addActionListener(new LoginButtonListener());

		JButton createAccountButton = new JButton("Create an account");
		//createAccountButton.addActionListener(new CreateAccountButtonListener());

		JLabel pleaseLogIn = new JLabel("Please log in to Mindows Wessenger:");

		JPanel usernamePane = new JPanel();
		usernamePane.setLayout(new BoxLayout(usernamePane, BoxLayout.LINE_AXIS));
		usernamePane.add(usernameLabel);
		usernamePane.add(username);
		usernamePane.add(Box.createRigidArea(new Dimension(300, 0)));

		JPanel passwordPane = new JPanel();
		passwordPane.setLayout(new BoxLayout(passwordPane, BoxLayout.LINE_AXIS));
		passwordPane.add(passwordLabel);
		passwordPane.add(password);
		passwordPane.add(Box.createRigidArea(new Dimension(300, 0)));

		JPanel buttonPane = new JPanel();
		buttonPane.setLayout(new BoxLayout(buttonPane, BoxLayout.LINE_AXIS));
		buttonPane.add(Box.createHorizontalGlue());
		buttonPane.add(loginButton);
		buttonPane.add(Box.createRigidArea(new Dimension(5, 0)));
		buttonPane.add(createAccountButton);

		login.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 10));
		login.setLayout(new BoxLayout(login, BoxLayout.PAGE_AXIS));

		login.add(pleaseLogIn);
		login.add(Box.createRigidArea(new Dimension(0, 5)));
		login.add(usernamePane);
		login.add(passwordPane);
		login.add(Box.createRigidArea(new Dimension(0, 10)));
		login.add(buttonPane);

		frame.getContentPane().add(login);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.setSize(600, 200);
		frame.setVisible(true);

	}

}

Attached is a screenshot of the GUI output.

[Michael Dunn]

add these lines

usernamePane.setAlignmentX(0);
passwordPane.setAlignmentX(0);
buttonPane.setAlignmentX(0);

comment out this line
//buttonPane.add(Box.createHorizontalGlue());

and they'll all be left-aligned