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How do I make a JTextField get the focus initially in a JPanel shown using JOptionPane.showConfirmDialog ?

Posted on 2011-02-11
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Last Modified: 2013-12-29
I have a JTextField on a JPanel.  I am using the JPanel in JOptionPane.showConfirmDialog(myPanel, ....)

The JTextField is on myPanel which uses a Border Layout.  How can I make the JTextField have the focus when I show the JOptionPane?

Normally I would use jTextField.requestFocus(true);

Thanks
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Question by:gdkinney_2
4 Comments
 
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Expert Comment

by:for_yan
ID: 34874298

I think txtfield.requestFocusInWindow() worked for me

JOptionPane will probably pop up modal, so you need it make not modal if
you care about focus in another window

   JOptionPane pane = new JOptionPane(message);
        pane.setMessageType(JOptionPane.INFORMATION_MESSAGE);      
        JDialog dialog = pane.createDialog(this, title);
        dialog.setModal(false);
       dialog.show();

This focus thing is very sensitive, you need to test

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Accepted Solution

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aciuica earned 250 total points
ID: 34874716
Or if you want to keep it modal you can try something like that:
JOptionPane pane = new JOptionPane(myPanel);
JDialog dialog = pane.createDialog(null, "Title");
dialog.addWindowListener(new WindowAdapter() {
    public void windowOpened(WindowEvent e) {
        textField.requestFocusInWindow();
    }
});
dialog.setVisible(true);
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LVL 92

Assisted Solution

by:objects
objects earned 250 total points
ID: 34875665
> Normally I would use jTextField.requestFocus(true);

you should avoid using requestFocus()

http://helpdesk.objects.com.au/java/how-to-change-focus-to-a-specific-jtextfield
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Expert Comment

by:Shura85
ID: 35018299
This may be overkill depending on what you are trying to do, but you can define your own FocusTraversalPolicy for the window.  Then when you impolement the getFirstComponenet(Container) method (and optionally, the getDefaultComponenet(Container)).  This will also allow you to define a tab order.  

Here's the link to Java's tutorial - its pretty simple to implement:
http://download.oracle.com/javase/tutorial/uiswing/misc/focus.html 
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