JButton behavior in BoxLayout

From:

Fred <fred.l.kleinschmidt@boeing.com>

Newsgroups:

comp.lang.java.gui

Date:

Wed, 22 Sep 2010 08:29:15 -0700 (PDT)

Message-ID:

<ac6b83bc-7c68-41dc-8057-9520039496a0@e34g2000prn.googlegroups.com>

If I place a JButton in a panel with BoxLayout (vertical), the
button's placement differs depending on whether the button's text is
HTML or not.

If the text is "PushMe", the button appears on the left, and does not
stretch if the panel is stretched horizontally.

However, if the button's text is "<html>Push Me</html>", the button is
centered and stretches to fill the entire box width when the panel is
resized horizontally. How can I get the second case to act like the
first (do not stretch to fill the wholepanel) ?

Here is code that demonstrates the problem (Java 1.6):

//--- begin code
import java.awt.Dimension;

import javax.swing.BoxLayout;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.SwingUtilities;
public class ButtonTest {

    public static void main( String[] args ) {
        //Schedule a job for the event dispatch thread:
        //creating and showing this application's GUI.
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
            createAndShowGUI();
            }
        });
    }

    private static void createAndShowGUI() {
        JFrame jf = new JFrame("ButtonTest");
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        JPanel jp = new JPanel();
        jf.getContentPane().add( jp );

        jp.setLayout( new BoxLayout( jp, BoxLayout.Y_AXIS ) );
        JButton b1 = new JButton( "Push Me" );
        jp.add( b1 );
        JButton b2 = new JButton( "<html>Push Me</html>" );
        jp.add( b2 );

        //Display the window.
        jf.pack();
        Dimension d = jf.getSize();
        d.width = 200;
        jf.setSize( d );
        jf.setVisible(true);
    }

}
//---- end code

--
Fred K