How to control the maximum size of a component in a GridBagLayout

Here is a small program that demonstrates my issue (it's originally from a big program that I couldn't attach here).
I have a GridBagLayout with some components in it. Some of the components are JEditorPane (displaying some HTML) within JPanel and are individally scrollable.
Here we go:
- when I resize the main panel, every components will resize accordingly to their weight (which is here the same for all of them): fine
- when I reduce the size of the main panel until it reaches all the preferred size of each component, the scrollPane of the main panel appears so that the user can scroll: not fine
The behaviour I'm looking for is: when I reduce the size of the main panel, when it reaches the preferred size of the components, I would like that the JEditorPane (which are in JPanel with BorderLayout/CENTER) display their individual scrollbars so that I can see all the JEditor panes at the same time without having to scroll the main window.
If the user continues to reduce the size of the main panel, then, at one point, display the scrollpane of the main panel.
See what I mean? How to control this?
Here is the code:
@SuppressWarnings("serial")
public final class CGridBagLayout2 extends JFrame {
     JPanel mainPanel;
     private final JScrollPane scrollPane;
     private JPanel panelize(Component component, String localization) {
          JPanel output = new JPanel(new BorderLayout());
          output.add(component, localization);
          return output;
    public void addComponentsToMainPanel() {
          mainPanel.setLayout(new GridBagLayout());
          GridBagConstraints c = new GridBagConstraints();
          c.weightx = 1.0;
          c.fill = GridBagConstraints.BOTH;
          String TEST_BIGTEXT = "<html><body><h2>Path</h2>toto/tutu/tata/TestN<h2>Prerequisites</h2>blah blah blah blah<br/><b>blah blah</b> blah blah\nblah blah <u>blah</u> blahblah blah blah<h2>Description</h2>blah blah blah blah<br/><b>blah blah</b> blah blah\nblah blah <u>blah</u> blahblah blah blah blah\nblah blah blah <br/>lah blah blah <br/>lah blah blah blah blah blah blah blah FIN</body></html>";
          for (int index=0; index<10; index++) {
               c.gridheight = 5; // nb Testcases for this test
               c.anchor = GridBagConstraints.FIRST_LINE_START; // align all the components top-left aligned
               c.gridy = index;
               JLabel a = new JLabel("AAAAA");
               c.gridx = 0;
               mainPanel.add(panelize(a, BorderLayout.NORTH), c);
               JLabel b = new JLabel("BBBBB");
               c.gridx = 1;
               mainPanel.add(panelize(b, BorderLayout.NORTH), c);
               JEditorPane d = new JEditorPane("text/html", TEST_BIGTEXT);
               c.gridx = 2;
               mainPanel.add(panelize(d, BorderLayout.CENTER), c);
               JEditorPane e = new JEditorPane("text/html", TEST_BIGTEXT);
               c.gridx = 3;
               mainPanel.add(panelize(e, BorderLayout.CENTER), c);
               index++;
     public CGridBagLayout2() {
          super("GridBagLayout");
          mainPanel = new JPanel();
          addComponentsToMainPanel();
          scrollPane = new JScrollPane(mainPanel);
          setContentPane(scrollPane);
     public static void main(String[] args) {
          Frame frame;
          WindowListener exitListener;
          exitListener = new WindowAdapter() {
               @Override
               public void windowClosing(WindowEvent e) {
                    Window window = e.getWindow();
                    window.setVisible(false);
                    window.dispose();
                    System.exit(0);
          frame = new CGridBagLayout2();
          frame.addWindowListener(exitListener);
          frame.setPreferredSize(new Dimension(1000, 800));
          frame.pack();
          frame.setVisible(true);
}Many thanks in advance, I'm getting crazy on this one :)

Ok, thanks for this information, I thought I had seen this happening in the past when embedding a component in the center area of a JPanel with BorderLayout.
Anyway, as I said I tested with JScrollPane as well and it does not change anything.
Here is the code modified:
@SuppressWarnings("serial")
public final class CGridBagLayout2 extends JFrame {
     JPanel mainPanel;
     private final JScrollPane scrollPane;
     private JPanel panelize(Component component, String localization) {
          JPanel output = new JPanel(new BorderLayout());
          output.add(component, localization);
          return output;
    public void addComponentsToMainPanel() {
          mainPanel.setLayout(new GridBagLayout());
          GridBagConstraints c = new GridBagConstraints();
          c.weightx = 1.0;
          c.fill = GridBagConstraints.BOTH;
          String TEST_BIGTEXT = "<html><body><h2>Path</h2>toto/tutu/tata/TestN<h2>Prerequisites</h2>blah blah blah blah<br/><b>blah blah</b> blah blah\nblah blah <u>blah</u> blahblah blah blah<h2>Description</h2>blah blah blah blah<br/><b>blah blah</b> blah blah\nblah blah <u>blah</u> blahblah blah blah blah\nblah blah blah <br/>lah blah blah <br/>lah blah blah blah blah blah blah blah FIN</body></html>";
          for (int index=0; index<10; index++) {
               c.gridheight = 5; // nb Testcases for this test
               c.anchor = GridBagConstraints.FIRST_LINE_START; // align all the components top-left aligned
               c.gridy = index;
               JLabel a = new JLabel("AAAAA");
               c.gridx = 0;
               mainPanel.add(panelize(a, BorderLayout.NORTH), c);
               JLabel b = new JLabel("BBBBB");
               c.gridx = 1;
               mainPanel.add(panelize(b, BorderLayout.NORTH), c);
               JEditorPane d = new JEditorPane("text/html", TEST_BIGTEXT);
               c.gridx = 2;
               mainPanel.add(panelize(new JScrollPane(d), BorderLayout.CENTER), c);
               JEditorPane e = new JEditorPane("text/html", TEST_BIGTEXT);
               c.gridx = 3;
               mainPanel.add(panelize(new JScrollPane(e), BorderLayout.CENTER), c);
     public CGridBagLayout2() {
          super("GridBagLayout");
          mainPanel = new JPanel();
          addComponentsToMainPanel();
          scrollPane = new JScrollPane(mainPanel);
          setContentPane(scrollPane);
     public static void main(String[] args) {
          Frame frame;
          WindowListener exitListener;
          exitListener = new WindowAdapter() {
               @Override
               public void windowClosing(WindowEvent e) {
                    Window window = e.getWindow();
                    window.setVisible(false);
                    window.dispose();
                    System.exit(0);
          frame = new CGridBagLayout2();
          frame.addWindowListener(exitListener);
          frame.setPreferredSize(new Dimension(1000, 800));
          frame.pack();
          frame.setVisible(true);
}Edited by: eric_gavaldo on Sep 15, 2010 2:18 PM

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I tried the following code (imported the necessary classes), but it does not work...
public class MyFrame extends JFrame
    public MyFrame()
        super("TestFrame");
        setLayout( new BoxLayout(getContentPane(), BoxLayout.X_AXIS) );
        setMaximumSize( new Dimension(400,200));
        setSize(300,150);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setVisible( true );
}// end class

Reposted from
{color:#0000ff}http://forum.java.sun.com/thread.jspa?threadID=5236259{color}
@OP:
When you repost a topic, please always provide a link to the previous post so people can check what suggestions were already offered (and didn't solve the problem).
Better still, give a short summary of the advice you have already tried.
I suggested setBackground(...) so you can see whether your MyFrame is actually occupying the entire real estate of the window. Looks as if trying it out (which I would have done for you if I'd been at home, where my JDK is) would have been too much effort for you.
I'm pretty much a novice in Swing, but I can tell you this: setLayout controls the layout of components added to the JFrame, not the layout of the frame with respect to its parent container.
Luck, Darryl

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Thanks.

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How can I control the image size when I export form iphoto, the choice is too limited, I need to send a photo under 3 MB but if I choose high quaulity it is only 1.1 and i need to keep the best quaulity I can. Thanks for help.

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Database size will gradually increase day by day is there any tool or possibility to control the size of the database.
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Gowtham
Moderator message: not directly related to ABAP development, standard "basis" functionality, please have a look in the Netweaver forums.
Edited by: Thomas Zloch on May 23, 2011 9:16 AM

Hi,
You can control the database size at technical setting level based on ur requirement. Field name is Size category.
Thanks.

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