//...
String run(String url) throws IOException {
    // randomly select a proxy from the list
    Random random = new Random();
    int index = random.nextInt(proxyList.size());
    ProxyInfo proxyInfo = proxyList.get(index);

    // Create a proxy object with the selected proxy details
    Proxy proxy = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(proxyInfo.host, proxyInfo.port));

}