import javax.swing.*;
import java.awt.event.*;

public class NestedPopupMenu{
	JPopupMenu Pmenu;
	JMenuItem Mitem;
	public static void main(String[] args) {
		NestedPopupMenu n = new NestedPopupMenu();
	}

	public	NestedPopupMenu(){
		JFrame frame = new JFrame("Creating a Popup Menu with Nested Menus");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		Pmenu = new JPopupMenu();
		Mitem = new JMenuItem("Line Up Icon");
		Pmenu.add(Mitem);
		Mitem = new JMenuItem("Refresh");
		Pmenu.add(Mitem);
		Mitem = new JMenuItem("Properties");
		Pmenu.add(Mitem);
		Pmenu.add(createMenu("New"));
		frame.addMouseListener(new MouseAdapter(){
			public void mouseReleased(MouseEvent Me){
				if(Me.isPopupTrigger()){
					Pmenu.show(Me.getComponent(), Me.getX(), Me.getY());
				}
			}
		});
		frame.setSize(400,400);
		frame.setVisible(true);
	}

	public JMenu createMenu(String title){
		JMenu m = new JMenu(title);
		m.add("Folder");
		m.add("Text Document");
		m.add("Shortcut");
		return m;
	}
}