(Java) Transition from MailMan.MxLookupAll to the Chilkat DNS class

Provides instructions for replacing deprecated MxLookupAll method calls with the Chilkat Dns class.

Note: This example requires Chilkat v11.0.0 or greater.

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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[])
  {
    CkMailMan mailman = new CkMailMan();

    // ...
    // ...

    String emailAddr = "joe@example.com";

    // ------------------------------------------------------------------------
    // The MxLookupAll method is deprecated:

    CkStringArray sa = mailman.MxLookupAll(emailAddr);
    if (mailman.get_LastMethodSuccess() == false) {
        System.out.println(mailman.lastErrorText());
        return;
        }

    // ...
    // ...

    // ------------------------------------------------------------------------
    // Do the equivalent using the Chilkat DNS class

    CkDns dns = new CkDns();

    CkJsonObject json = new CkJsonObject();

    // This gets all MX domains for an email address.  (Typically one domain.)
    // The preferred domain will be at index 0 (see below).
    boolean success = dns.Query("MX",emailAddr,json);
    if (success == false) {
        System.out.println(dns.lastErrorText());
        return;
        }

    int i = 0;
    int count_i = json.SizeOfArray("answer.mx");
    while (i < count_i) {
        json.put_I(i);
        String domain = json.stringOf("answer.mx[i].domain");
        System.out.println(domain);
        i = i+1;
        }
  }
}