Java Programming

My question is simple:
How can I open a JavaScript file with Google Chrome on a Mac computer using Java?

This is my code so far:

JOptionPane.showMessageDialog(null, "Please browse to Google Chrome!");
                            JFileChooser fc = new JFileChooser();
                            FileFilter ff = new FileFilter() {

                                public boolean accept(File pathname) {
                                    if (pathname.isDirectory()) {
                                        return true;
                                    }
                                    if (pathname.getName().toLowerCase().equals("chrome.exe") || pathname.getName().toLowerCase().equals("chrome.app")) {
                                        return true;
                                    }
                                    return false;
                                }

                                @Override
                                public String getDescription() {
                                    return "chrome.exe; chrome.app";
                                }
                            };
                            fc.setFileFilter(ff);
                            int returnVal = fc.showOpenDialog(null);
                            if (returnVal == JFileChooser.APPROVE_OPTION) {
                                try {
                                    Runtime.getRuntime().exec("open " + fc.getSelectedFile().toURI() + " " + f.toURI());
                                } catch (Exception exxxx) {
                                    JOptionPane.showMessageDialog(null, "Unknown exception occurred! It's: " + exxxx.toString() + "\n" + "fc.getSelectedFile().toURI()");
                                }
                            }

I have little to no Mac knowledge, but this code opens Google Chrome, Safari and Finder at once...