Interact directly with the JRootPane of a JFrame : JRootPane « Swing « Java Tutorial

1. Java Tutorial
2. Swing
3. JRootPane

import java.awt.Container;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JRootPane;

public class Main {

  public static void main(String[] args) {

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JRootPane root = f.getRootPane();
    Container content = root.getContentPane();
    content.add(new JButton("Hello"));

    f.pack();
    f.setVisible(true);

  }
}

14.84.JRootPane
	14.84.1.	JRootPane
	14.84.2.	Setting Window Decoration Style
	14.84.3.	Setting the default button
	14.84.4.	Interact directly with the JRootPane of a JFrame
	14.84.5.	Make a JFrame looks like a JDialog
	14.84.6.	Customizing JRootPane Look and Feel