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    <p>Basically, this creates a popup menu and registers it with the component using <a href="http://docs.oracle.com/javase/7/docs/api/javax/swing/JComponent.html#setComponentPopupMenu%28javax.swing.JPopupMenu%29" rel="noreferrer"><code>JComponent#setComponentPopupMenu</code></a>. This means that I no longer need to monitor for mouse events or make decisions about when to show the popup.</p> <p>I then override <a href="http://docs.oracle.com/javase/7/docs/api/javax/swing/JComponent.html#getPopupLocation%28java.awt.event.MouseEvent%29" rel="noreferrer"><code>JComponent#getPopupLocation</code></a> and calculate the location where I want the popup to appear.</p> <p>Basically, I get the <a href="http://docs.oracle.com/javase/7/docs/api/javax/swing/JComponent.html#getComponentPopupMenu%28%29" rel="noreferrer"><code>JComponent#getComponentPopupMenu</code></a>, get it's preferred size and calculate an appropriate offset so that the bottom, left corner now appears in the center of the component...</p> <p><img src="https://i.stack.imgur.com/YE691.png" alt="enter image description here"></p> <pre><code>import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Graphics; import java.awt.Point; import java.awt.event.MouseEvent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JMenuItem; import javax.swing.JPanel; import javax.swing.JPopupMenu; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class TestPopup02 { public static void main(String[] args) { new TestPopup02(); } public TestPopup02() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { } JFrame frame = new JFrame("Testing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new BorderLayout()); frame.add(new TestPane()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class TestPane extends JPanel { public TestPane() { JPopupMenu menu = new JPopupMenu(); menu.add(new JMenuItem("Edit Playlist")); menu.addSeparator(); menu.add(new JMenuItem("Check for Available Downloads...")); menu.addSeparator(); menu.add(new JMenuItem("Export...")); menu.add(new JMenuItem("Burn Playlist to Disc")); menu.add(new JMenuItem("Copy To Play Order")); menu.addSeparator(); menu.add(new JMenuItem("Delete")); setComponentPopupMenu(menu); } @Override public Point getPopupLocation(MouseEvent event) { // Get the registered popup menu... JPopupMenu popup = getComponentPopupMenu(); // Get the super point, just in case... Point pos = super.getPopupLocation(event); if (popup != null) { // Create a new "point" location pos = new Point(); // get the preferred size of the menu... Dimension size = popup.getPreferredSize(); // Adjust the x position so that the left side of the popup // appears at the center of the component pos.x = (getWidth() / 2); // Adjust the y position so that the y postion (top corner) // is positioned so that the bottom of the popup // appears in the center pos.y = (getHeight() / 2) - size.height; } return pos; } @Override public Dimension getPreferredSize() { return new Dimension(400, 200); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); // Simply draws a cross in the center of the window, so you // know where the center is... int width = getWidth() - 1; int height = getHeight() - 1; g.drawLine(width / 2, 0, width / 2, height); g.drawLine(0, height / 2, width, height / 2); } } } </code></pre> <p><strong>Update with Mac output</strong></p> <p><img src="https://i.stack.imgur.com/Lbznk.png" alt="enter image description here"></p> <h2>Button example</h2> <p>It is unlikely that you will ever find a solution that meets precisely your needs. One of the greatest skills any developer can develop is the ability to take an idea and mold it there needs.</p> <p>The previous example holds every thing you need, you just need to be able to make the leap from concept to solution.</p> <p><code>getPopupLocation</code> is part of the component popup API, so either overriding the method or calling it probably isn't quite what you need (unless you have a dedicated button for the task, which may not be a bad thing), so you would need to adapt the solution to your needs...</p> <p><img src="https://i.stack.imgur.com/SACdX.png" alt="enter image description here"></p> <pre><code>import java.awt.BorderLayout; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Graphics; import java.awt.GridBagLayout; import java.awt.Point; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.MouseEvent; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JMenuItem; import javax.swing.JPanel; import javax.swing.JPopupMenu; import javax.swing.UIManager; import javax.swing.UnsupportedLookAndFeelException; public class TestPopup02 { public static void main(String[] args) { new TestPopup02(); } public TestPopup02() { EventQueue.invokeLater(new Runnable() { @Override public void run() { try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) { } JFrame frame = new JFrame("Testing"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new BorderLayout()); frame.add(new TestPane()); frame.pack(); frame.setLocationRelativeTo(null); frame.setVisible(true); } }); } public class TestPane extends JPanel { private JButton button; private JPopupMenu popup; public TestPane() { popup = new JPopupMenu(); popup.add(new JMenuItem("Edit Playlist")); popup.addSeparator(); popup.add(new JMenuItem("Check for Available Downloads...")); popup.addSeparator(); popup.add(new JMenuItem("Export...")); popup.add(new JMenuItem("Burn Playlist to Disc")); popup.add(new JMenuItem("Copy To Play Order")); popup.addSeparator(); popup.add(new JMenuItem("Delete")); setLayout(new GridBagLayout()); button = new JButton("+"); button.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { popup.pack(); Point pos = new Point(); // get the preferred size of the menu... Dimension size = popup.getPreferredSize(); // Adjust the x position so that the left side of the popup // appears at the center of the component pos.x = (button.getWidth() / 2); // Adjust the y position so that the y postion (top corner) // is positioned so that the bottom of the popup // appears in the center pos.y = (button.getHeight() / 2) - size.height; popup.show(button, pos.x, pos.y); } }); add(button); } @Override public Dimension getPreferredSize() { return new Dimension(400, 200); } @Override protected void paintComponent(Graphics g) { super.paintComponent(g); // Simply draws a cross in the center of the window, so you // know where the center is... int width = getWidth() - 1; int height = getHeight() - 1; g.drawLine(width / 2, 0, width / 2, height); g.drawLine(0, height / 2, width, height / 2); } } } </code></pre>
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    1. POMake JPopupMenu Display with a Certain Bottom Left Coordinate
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    1. USMadProgrammer
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      1. VTUpMod
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    1. COI think that you've misunderstood the question. I want for it to be so that when you click on a button (or alternatively, click on a certain point), that the JPopupMenu appears with the bottom left corner at that point (as shown in the iTunes menu). Your screenshot shows the bottom left corner of the JPopupMenu as being off the screen, so it couldn't have worked that way. Also, I'm finding your example really hard to follow; I don't understand what the point represents that getPopupLocation is returning.
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      1. USThunderforge
    2. CO`getPopupLocation` returns the location of the top/left corner that you want the popup to appear. By default, `JPopupMenu` will auto correct to make sure it's within the screen bounds. Do you just want to keep the popup within the active frame?
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    3. COYes, I would like to keep it within the bounds of the screen. I don't really care if it's within the bounds of the JFrame though, just that the bottom left corner is at the center of the button (although it'd be hard to get that off the JFrame in most cases). I suppose another point of confusion with your answer is that I'm using menu.show() inside of an ActionListener (see my pastebin in the question comments) whereas you're using a completely different method with a subclassed JPanel.
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