401 means "Unauthorized", so there must be something with your credentials.
I think that java URL does not support the syntax you are showing. You could use an Authenticator instead.
Authenticator.setDefault(new Authenticator() {
@Override
protected PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(login, password.toCharArray());
}
});
and then simply invoking the regular url, without the credentials.
The other option is to provide the credentials in a Header:
String loginPassword = login+ ":" + password;
String encoded = new sun.misc.BASE64Encoder().encode (loginPassword.getBytes());
URLConnection conn = url.openConnection();
conn.setRequestProperty ("Authorization", "Basic " + encoded);
PS: It is not recommended to use that Base64Encoder but this is only to show a quick solution. If you want to keep that solution, look for a library that does. There are plenty.