How to set the JFrame as a parent to the JDialog

Question

I am having trouble to set the frame as a owner to the dialog. Normally when I extend JDialog class for creating a dialog then I use super(frame) t

Answer 1

A dialog's (or window's) owner can be set only in the constructor, so the only way to set it is by using a constructor which takes the owner as parameter, like:

class DialogWithoutExtend {

    private JFrame frame;
    public DialogWithoutExtend(JFrame frame) {
        this.frame = frame;
    }

    public void cretaUI() {
        JDialog dialog = new JDialog(frame);
        dialog.setTitle("Dialog created without extending JDialog class.");
        dialog.setSize(new Dimension(400, 100));
        dialog.setLocationRelativeTo(frame);
        dialog.setModal(true);
        dialog.setVisible(true);
    }
}