I am writing a file reader through REST api, simple code as below:

import domain

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.URL;
import java.net.ssl.HttpsURLConnection;
import java.net.MalformedURLException;

public class Verifier{
    public static void main(String args[]) throws IOException
    {
        URL url = new URL("https://somehostname.xx.xxx.net/somecontent?somequery=number");
        try{
            HttpsURLConnection http=(HttpsURLConnection) url.openConnection();
            int reponse = http.getResponseCode();
            //some json processing
            //...
           }catch (MalformedURLException e) {
               e.printStackTrace();
           }catch (IOException e) {
               e.printStackTrace();
           }
    }
}

Then I got the error at line

int reponse = http.getResponseCode();

where the error message is:

javax.net.ssl.SSLHandshakeException: java.security.cert.CertificateException: No subject alternative DNS name matching somehostname.xx.xxx.net found.
    at sun.security.ssl.Alerts.getSSLException(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
    at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
    at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
    at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
    at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
    at sun.security.ssl.Handshaker.processLoop(Unknown Source)
    at sun.security.ssl.Handshaker.process_record(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
    at sun.net.www.protocol.https.HttpsClient.afterConnect(Unknown Source)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
    at java.net.HttpURLConnection.getResponseCode(Unknown Source)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
    at domain.main(Verifier.java:39)
Caused by: java.security.cert.CertificateException: No subject alternative DNS name matching somehostname.xx.xxx.net found.
    at sun.security.util.HostnameChecker.matchDNS(Unknown Source)
    at sun.security.util.HostnameChecker.match(Unknown Source)
    at sun.security.ssl.X509TrustManagerImpl.checkIdentity(Unknown Source)
    at sun.security.ssl.X509TrustManagerImpl.checkIdentity(Unknown Source)
    at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
    at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
    ... 15 more

The content from the same site can be retrieved through the chrome browser, without any username or password (but it did show there is a problem with this website's security certificate in IE explorer, not in Chrome, you can continue to get the json content without typing anything).

I am thinking there might be some certificate problem in JAVA/eclipse, maybe? How can I solve it?

Thanks.