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public static void main(String[] args) {        JPopupMenu.setDefaultLightWeightPopupEnabled(false);        Browser browser = new Browser();        BrowserView view = new BrowserView(browser);        JFrame frame = new JFrame();        frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);        frame.add(view, BorderLayout.CENTER);        frame.setSize(700, 500);        frame.setLocationRelativeTo(null);        frame.setVisible(true);        browser.setContextMenuHandler(new MyContextMenuHandler(view));        browser.loadURL("http://baidu.com");    }    private static class MyContextMenuHandler implements ContextMenuHandler {        private final JComponent component;        private MyContextMenuHandler(JComponent parentComponent) {            this.component = parentComponent;        }        public void showContextMenu(final ContextMenuParams params) {            final JPopupMenu popupMenu = new JPopupMenu();            if (!params.getLinkText().isEmpty()) {                popupMenu.add(createMenuItem("打开新窗口", new Runnable() {                    public void run() {                        String linkURL = params.getLinkURL();                        System.out.println("linkURL = " + linkURL);                    }                }));            }            final Browser browser = params.getBrowser();            popupMenu.add(createMenuItem("刷新网页", new Runnable() {                public void run() {                    browser.reload();                }            }));            final Point location = params.getLocation();            SwingUtilities.invokeLater(new Runnable() {                public void run() {                    popupMenu.show(component, location.x, location.y);                }            });        }        private static JMenuItem createMenuItem(String title, final Runnable action) {            JMenuItem reloadMenuItem = new JMenuItem(title);            reloadMenuItem.addActionListener(new ActionListener() {                public void actionPerformed(ActionEvent e) {                    action.run();                }            });            return reloadMenuItem;        }    }