Java 의 SSLHandshakeException 문제 해결

import java.io.IOException;
import java.net.URL;
import java.security.cert.Certificate;
import java.security.cert.CertificateEncodingException;
import javax.net.ssl.HttpsURLConnection;
import javax.security.cert.CertificateException;
public class Hc {
	public static void main(String[] args) throws IOException, CertificateEncodingException, CertificateException {
		if (args == null || args.length == 0) {
			System.err.println("url parameter not suppplied. ");
			System.exit(0);
		}
		
		URL url;
		
		url = new URL(args[0]);
		HttpsURLConnection con = (HttpsURLConnection) url.openConnection();
		System.out.println("Response Code : " + con.getResponseCode());
		System.out.println("Cipher Suite : " + con.getCipherSuite());
		System.out.println("\n");
		Certificate[] certs = con.getServerCertificates();
		for (Certificate cert : certs) {
			javax.security.cert.X509Certificate c = javax.security.cert.X509Certificate.getInstance(cert.getEncoded());
			System.out.println("\tCert Dn : " + c.getSubjectDN());
			System.out.println("\tIssuer Dn : " + c.getIssuerDN());
			System.out.println("\n");
		}
		
		con.disconnect();
	}
}