Java
CardConnect Test API Credentials

To test and validate site-level credentials, you can make a GET request with no body to the base URL.
Chilkat Java Downloads

Java
import com.chilkatsoft.*;

public class ChilkatExample {

  static {
    try {
        System.loadLibrary("chilkat");
    } catch (UnsatisfiedLinkError e) {
      System.err.println("Native code library failed to load.\n" + e);
      System.exit(1);
    }
  }

  public static void main(String argv[])
  {
    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // The CardConnect REST Web Service base URL includes a protocol, host, port and servlet specification.
    // 
    // For example:
    // https://<site>.cardconnect.com:<port>/cardconnect/rest/
    // 
    // This represents an HTTPS request to the REST web service base URL. 
    // The servlet name is fixed within the application; the host and port are assigned by CardConnect. 

    CkHttp http = new CkHttp();

    http.put_BasicAuth(true);
    http.put_Login("API_USERNAME");
    http.put_Password("API_PASSWORD");

    String url = "https://<site>.cardconnect.com:<port>/cardconnect/rest/";
    String responseStr = http.quickGetStr(url);

    if (http.get_LastMethodSuccess() == false) {
        System.out.println(http.lastErrorText());
        return;
        }

    // If we get a 200 response status and an HTML response saying "CardConnect REST Servlet", then our credentials are correct.
    System.out.println("response status code = " + http.get_LastStatus());

    System.out.println("response string:");
    System.out.println(responseStr);

    // Sample output:

    // response status code = 200
    // response string:
    // <html lang="en"><body><h1>CardConnect REST Servlet</h1></body></html
  }
}