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From: Knute Johnson <nospam@knutejohnson.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: How to align swing buttons vertically ?
Date: Sun, 13 Nov 2011 11:01:24 -0800
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On 11/13/2011 9:28 AM, Olivier Scalbert wrote:
> On 11/13/2011 03:38 PM, Martin Gregorie wrote:
>> That's nothing to do with the layout. It aligns the objects you're laying
>> out by doing its best with the sizes of the objects you created.
>>
>> JButton inherits size setting methods (setMaximumSize, setMinimumSize,
>> setPreferredSize) from JComponent. Use them to control button size.
>>
>>
>>
>
> 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);
>                  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;
>      }
> }
>
> Olivier

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

public class test extends JPanel {
     public test() {
         super(new GridBagLayout());

         GridBagConstraints c = new GridBagConstraints();
         c.fill = GridBagConstraints.HORIZONTAL;
         c.gridy = 0;

         String labels[] = {"Button 1","Button 2",
          "Long Button 3","Button 4","Button 5"};

         for (int i=0; i<labels.length; i++) {
             add(new JButton(labels[i]),c);
             ++c.gridy;
         }
     }

     public static void main(String[] args) {
         EventQueue.invokeLater(new Runnable() {
             public void run() {
                 JFrame f = new JFrame();
                 f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                 f.add(new test(),BorderLayout.EAST);
                 f.setSize(700,500);
                 f.setVisible(true);
             }
         });
     }
}

-- 

Knute Johnson