Re: How to align swing buttons vertically ?

From:

Lew <lewbloch@gmail.com>

Newsgroups:

comp.lang.java.programmer

Date:

Sun, 13 Nov 2011 11:03:39 -0800 (PST)

Message-ID:

<2442894.209.1321211019540.JavaMail.geo-discussion-forums@prew38>

Olivier Scalbert wrote:

Perhaps I have not understand, but with the following code, buttons are
not well aligned:

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

public class TestViewer {

    public static void main(String[] args) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new ViewerFrame();
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                frame.setSize(800, 600);

Shouldn't you call 'pack()' right here? Layouts often don't work well without it.

                frame.setVisible(true);
            }
        });
    }
}

class ViewerFrame extends JFrame {

    public ViewerFrame() {
        getContentPane().add(new JPanel(), BorderLayout.CENTER);
        getContentPane().add(createBtnPanel(), BorderLayout.EAST);
    }

    private JPanel createBtnPanel() {
        JPanel btnPanel = new JPanel();

        btnPanel.setLayout(new BoxLayout(btnPanel, BoxLayout.Y_AXIS));

        btnPanel.add(new JButton("Button 1"));
        btnPanel.add(new JButton("Button 2"));
        btnPanel.add(new JButton("Long Button 3"));
        btnPanel.add(new JButton("Button 4"));
        btnPanel.add(new JButton("Button 5"));

        return btnPanel;
    }
}

--
Lew