import java.awt.BorderLayout;

import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.border.TitledBorder;

public class PopupMenuSample3 {
    private JPopupMenu popupMenu;

    public PopupMenuSample3() {
        JFrame frame = new JFrame("PopupMenu Sample");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationByPlatform(true);
        frame.setSize(200, 200);
        
        popupMenu = new JPopupMenu();
        popupMenu.add(new JMenuItem("item 1"));
        popupMenu.add(new JMenuItem("item 2"));
        popupMenu.add(new JMenuItem("item 3"));

        ((JComponent)frame.getContentPane()).setComponentPopupMenu(popupMenu);

        JPanel panel = new JPanel();
        panel.setLayout(new BorderLayout());
        panel.setBorder(new TitledBorder("JPanel"));
        frame.getContentPane().add(panel);

        panel.setInheritsPopupMenu(true);

        JPanel panel2 = new JPanel();
        panel2.setLayout(new BorderLayout());
        panel2.setBorder(new TitledBorder("JPanel"));
        panel.add(panel2);

        panel2.setInheritsPopupMenu(true);

        JButton button = new JButton("Button");
        button.setBorder(new TitledBorder("JButton"));
        panel2.add(button);

        button.setInheritsPopupMenu(true);

        frame.setVisible(true);
    }

    public static void main(String[] args) {
        new PopupMenuSample3();
    }
}