HttpsURLConnection bypass the CertificateExpiredException

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.StringWriter;
import java.net.URL;
import java.net.URLEncoder;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSession;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

public class Main {

  public static void main(String[] args) throws Exception {

    TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
      public void checkClientTrusted(
          X509Certificate[] x509Certificates,
          String string) throws CertificateException {

      }

      public void checkServerTrusted(X509Certificate[] arg0, String arg1)
          throws CertificateException {
      }

      public X509Certificate[] getAcceptedIssuers() {
        return null;
      }
    } };

    HostnameVerifier dummyHostnameVerifier = new HostnameVerifier() {

      public boolean verify(String hostname, SSLSession session) {
        return true;
      }

    };

    SSLContext sc = SSLContext.getInstance("TLS");
    sc.init(null, trustAllCerts, new SecureRandom());
    HttpsURLConnection.setDefaultSSLSocketFactory(sc.getSocketFactory());
    HttpsURLConnection.setDefaultHostnameVerifier(dummyHostnameVerifier);

    String host = "https://host";
    String parameterName = "parameter";
    String parameterValue = "value";

    URL url = new URL(host);

    HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();

    conn.setRequestMethod("POST");
    conn.setDoOutput(true);
    conn.setDoInput(true);

    OutputStream os = conn.getOutputStream();
    try {
      os.write((parameterName + "=" + URLEncoder.encode(parameterValue,
          "UTF-8")).getBytes());
    } finally {
      os.close();
    }

    StringWriter sw = new StringWriter();
    InputStream in = conn.getInputStream();
    try {
      InputStreamReader isr = new InputStreamReader(in, "UTF-8");
      BufferedReader br = new BufferedReader(isr);
      String s = br.readLine();
      while (s != null) {
        sw.write(s + "\n");
        s = br.readLine();
      }
    } finally {
      in.close();
      sw.close();
    }
    System.out.println(sw.toString());
  }
}