Question

So, I need to create a class that extends JDialog, to remove JDialog code from the main functions code.

However, I don’t know how to set it’s parent JFrame after the JDialog has been created.

It’s usually done by passing the JFrame to the constructor, but since it’s a custom class, I don’t know how to set it to be JDialogs parent. I couldn’t find any method of type JDialog.setParent(JFrame); I hope you understand the problem.

Any suggestions?

Answer 1

The parent Window (Frame or Dialog) is called owner in the APIs. You can only mention it in the constructor by calling the super class (JDialog) constructor.

Example:

public class SomeDialog extends JDialog {

  public SomeDialog() {
    // see other JDialog constructors for other ways to call this
    super(parentWindow, title, ModalityType.DOCUMENT_MODAL);
    ...
  }

}

You cannot set it later, after your custom JDialog has been created.