java - 用 Java 替换 Host 文件

Question

到目前为止，这是我的代码，是的，我知道它非常基本。但我想要完成的是替换位于 System32\drivers\etc 文件夹中的主机文件，我在这样做时遇到的问题是我收到拒绝访问错误。如何让程序访问以在 windows 文件夹中进行更改，SaveURL 类也只是下载文件并使用两个字符串通过函数 saveImage 传递名称和下载位置。我怎样才能给自己访问权限？在此先感谢我真的很感激。

private void jButton7MouseClicked(java.awt.event.MouseEvent evt) {                                      
        String destinationHosts = "hosts";
        String urlHosts = "https://dl.dropbox.com/s/awdvoprxyo7r2q6/hosts?dl=1";
        Object hostOptions[] = {"Replace", "Close"};
        File fileHosts = new File(destinationHosts);
        File dirHost = new File("hosts");
        boolean dirHosts = dirHost.mkdir();
        try {
            Runtime.getRuntime().exec("notepad.exe \\Windows\\system32\\drivers\\etc\\hosts");
            jTextArea2.append("Opening Host File \n");
            int hostFile = JOptionPane.showOptionDialog(rootPane, "Would you like to replace the Hosts File?",
                    "Yes or No", JOptionPane.YES_NO_OPTION, JOptionPane.NO_OPTION, null, hostOptions, hostOptions[0]);
            if (hostFile == JOptionPane.YES_NO_OPTION) {
                jTextArea2.append("Downloading New Host File");
                SaveUrl.saveImage(urlHosts, destinationHosts);
                fileHosts.renameTo(new File(dirHost, fileHosts.getName()));
                Path source = Paths.get("\\hosts\\hosts");
                Path target = Paths.get("\\Windows\\system32\\drivers\\etc\\");
                Files.copy(source, target);
                jTextArea2.append("Host file replaced");
            }
        } catch (IOException ex) {
            Logger.getLogger(ToolKit1.class.getName()).log(Level.SEVERE, null, ex);
        }
    }