Test SSL connection in JVM

TestSSL.java

import java.io.FileOutputStream;
import java.io.ObjectOutputStream;
import java.security.cert.CertPath;
import java.security.cert.CertificateFactory;
import java.util.ArrayList;
import java.util.List;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.SSLContext;
import java.security.cert.X509Certificate;

public class TestSSL
{ 
  public static void main(String [] args)
  {
    try {
      if (args.length < 1) { 
        System.out.println("Usage: java TestSSL <hostname>");
        System.exit(0);
      }
      System.out.println("Java " + System.getProperty("java.version"));
      SSLContext sc = SSLContext.getInstance("TLS"); 
      sc.init(null, null, null);
      SSLSocketFactory ssf = sc.getSocketFactory(); 
      SSLSocket s = (SSLSocket) ssf.createSocket(args[0], 443);
      s.startHandshake();
      SSLSession session = s.getSession();
        java.security.cert.Certificate[] servercerts = session.getPeerCertificates();

        for (int i = 0; i < servercerts.length; i++) {
          X509Certificate xc = (X509Certificate) servercerts[i];
          System.out.println("=====================================================");
          System.out.println(xc.getSubjectDN());
          System.out.println(xc.getNotAfter());
            System.out.println(xc.getIssuerDN());
            System.out.println(xc.getSigAlgName());
        }
    } catch (Exception e) {
      e.printStackTrace();
    }
  }

}