如何使用带有Java的Selenium webdriver为firefox设置代理？

Question

public static void main(String[] args) throws InterruptedException, IOException, UnsupportedEncodingException {
while (true) {
System.setProperty("webdriver.gecko.driver", "E:\\geckodriver-v0.18.0-win64\\geckodriver.exe");
WebDriver driver;
String PROXY = "83.209.94.87:35923";
  //Bellow given syntaxes will set browser proxy settings using DesiredCapabilities.
  Proxy proxy = new Proxy();
  proxy.setAutodetect(false);
  proxy.setProxyType(Proxy.ProxyType.MANUAL);
  proxy.setSocksProxy(PROXY);
  DesiredCapabilities cap = new DesiredCapabilities();
  cap.setCapability(CapabilityType.PROXY, proxy);
  //Use Capabilities when launch browser driver Instance.
  driver = new FirefoxDriver(cap);`

当我运行此代码并启动firefox时，代理设置将设置为“使用系统代理设置＆＃39;”。如何启动firefox，它的代理设置会自动更改为我指定的代理。