Java用编码检测代理ip是否有效

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.URL;
 
public class ProxyChecker {
    public static boolean checkProxy(String proxy) {
        try {
            String[] parts = proxy.split(":");
            String ip = parts[0];
            int port = Integer.parseInt(parts[1]);
            Proxy proxyObj = new Proxy(Proxy.Type.HTTP, new InetSocketAddress(ip, port));
            URL url = new URL("https://www.example.com");
            HttpURLConnection connection = (HttpURLConnection) url.openConnection(proxyObj);
            connection.setConnectTimeout(5000);
            connection.setReadTimeout(5000);
            int responseCode = connection.getResponseCode();
            if (responseCode == 200) {
                return true;
            } else {
                return false;
            }
        } catch (IOException | NumberFormatException e) {
            return false;
        }
    }

import java.io.IOException;
import java.net.Socket;
 
public class ProxySocketChecker {
    public static boolean checkProxySocket(String proxy) {
        try {
            String[] parts = proxy.split(":");
            String ip = parts[0];
            int port = Integer.parseInt(parts[1]);
            Socket socket = new Socket();
            socket.connect(new java.net.InetSocketAddress(ip, port), 5000);
            socket.close();
            return true;
        } catch (IOException | NumberFormatException e) {
            return false;
        }
    }
}