public class PopupMenuFrame {

	public static void main(String[] args) {
		JFrame frame = new JFrame();
		JLabel label = new JLabel("label");

		final JPopupMenu labelPopupMenu = new JPopupMenu();
		labelPopupMenu.add(new JMenuItem("Premier menu"));
		labelPopupMenu.add(new JMenuItem("Deuxième menu"));
		label.addMouseListener(new MouseAdapter()  {
			public void mouseClicked(MouseEvent e) {
				// clic sur le bouton droit   
				if(e.getButton() == MouseEvent.BUTTON3) {
					labelPopupMenu.show(e.getComponent(), e.getX(), e.getY());
				}
			}
		});

		frame.getContentPane().add(label);
		frame.getContentPane().setLayout(new FlowLayout());
		frame.setSize(100, 100);
		frame.setVisible(true);
	}
}