Question

I have to display a Jpanel inside a JDialog and so far I dealt with it however I don’t know how to close the dialog and receive the data inside the Jpanel before disposing of it.

    newButton.addActionListener(new ActionListener()
    {
        @Override
        public void actionPerformed(ActionEvent event)
        {
             JDialog dialog = new JDialog(Main.getMainFrame(), true);
            JPanel jPanel = new JPanel();
            dialog.getContentPane().add(jPanel);
            dialog.setMinimumSize(new Dimension(600, 800));
            dialog.setVisible(true);
            if (jPanel.close)
            {
                /*read some useful information from the jpanel*/
                dialog.setVisible(false);
                dialog.dispose();
            }
        }
    });

so far I have put a button inside the Jpanel which sets a boolean close = true and the dialog reads it and disposes of itself. However this doesn’t work: I suspect the jPanel.close() is tested before I click close inside the JPanel while it should wait for the actual close value to change.

Answer 1

You can use code like this to get container window instance (JDialog in our case)

JDialog parentDialog=(JDialog)SwingUtilities.getWindowAncestor(jPanel);