Java Coding Problems

256. Setting connection authentication

Typically, authentication to a server is accomplished using a username and password. In code form, this can be done by using the Authenticator class (this negotiates the credentials for HTTP authentication) and the PasswordAuthentication class (the holder for the username and password) together, as follows:

HttpClient client = HttpClient.newBuilder()  .authenticator(new Authenticator() {    @Override    protected PasswordAuthentication getPasswordAuthentication() {      return new PasswordAuthentication(        "username",        "password".toCharArray());    }  })  .build();

Furthermore, the client can be used to send requests:

HttpRequest request = HttpRequest.newBuilder()  ...  .build();HttpResponse<String> response = client.send(request, ...