import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JTextArea;

public class PopupMenuSample1 {
    private JPopupMenu menu;

    public PopupMenuSample1() {
        JFrame frame = new JFrame("PopupMenu Sample");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationByPlatform(true);
        frame.setSize(400, 100);
        
        menu = new JPopupMenu();
        menu.add(new JMenuItem("item 1"));
        menu.add(new JMenuItem("item 2"));
        menu.add(new JMenuItem("item 3"));

        JTextArea area = new JTextArea(20, 20);
        area.setComponentPopupMenu(menu);

        frame.getContentPane().add(area);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        new PopupMenuSample1();
    }
}