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copied!<p>Hmm did a short example for you:</p> <p><img src="https://i.stack.imgur.com/dPjg2.png" alt="JPopUpMenu"></p> <p><img src="https://i.stack.imgur.com/fcdRC.png" alt="Square drawn"></p> <p><strong>Test.java:</strong></p> <pre><code>import java.awt.Dimension; import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.Rectangle; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import java.awt.event.MouseListener; import java.util.ArrayList; import java.util.List; import javax.swing.*; public class Test { private final JFrame frame = new JFrame(); private final MyPanel panel = new MyPanel(); private void createAndShowUI() { frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setResizable(false); frame.add(panel); frame.pack(); frame.setVisible(true); } public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new Test().createAndShowUI(); } }); } } </code></pre> <p><strong>MyPanel.java:</strong></p> <pre><code>class MyPanel extends JPanel { private final JPopupMenu popupMenu = new JPopupMenu(); private final JMenuItem drawRectJMenu = new JMenuItem("Draw Rectangle here"); private int x = 0, y = 0; private List<Rectangle> recs = new ArrayList<>(); public MyPanel() { initComponents(); } private void initComponents() { setBounds(0, 0, 600, 600); setPreferredSize(new Dimension(600, 600)); popupMenu.add(drawRectJMenu); add(popupMenu); addMouseListener(new MouseListener() { @Override public void mouseClicked(MouseEvent e) { checkForTriggerEvent(e); } @Override public void mouseEntered(MouseEvent e) { } @Override public void mouseExited(MouseEvent e) { } @Override public void mousePressed(MouseEvent e) { } @Override public void mouseReleased(MouseEvent e) { } private void checkForTriggerEvent(MouseEvent e) { if (e.getButton() == MouseEvent.BUTTON3) { x = e.getX(); y = e.getY(); popupMenu.show(e.getComponent(), x,y); } } }); drawRectJMenu.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { addRec(new Rectangle(x, y, 100, 100)); repaint(); } }); } public void addRec(Rectangle rec) { recs.add(rec); } @Override public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; for (Rectangle rec : recs) { g2d.drawRect(rec.x, rec.y, rec.width, rec.height); } } } </code></pre>

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