(Java) Get Certificate Valid To/From Dates

Demonstrates how to get the certificate "valid from" and "valid to" dates.

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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[])
  {
    CkCert cert = new CkCert();

    boolean success = cert.LoadFromFile("qa_data/certs/testCert.cer");
    if (success != true) {
        System.out.println(cert.lastErrorText());
        return;
        }

    // Get the certificate valid-from date/time
    CkDateTime ckdt = cert.GetValidFromDt();
    // Get the local timestamp string.
    System.out.println("Valid from: " + ckdt.getAsTimestamp(true));
    // Valid from: 2017-03-17T19:00:00-05:00

    // Now get the date/time as another object where we can get the individual numeric date parts.
    CkDtObj dt = ckdt.GetDtObj(true);
    System.out.println(dt.get_Day() + "/" + dt.get_Month() + "/" + dt.get_Year() + "  " + dt.get_Hour() + ":"
         + dt.get_Minute());

    // Get the certificate valid-to date/time
    ckdt = cert.GetValidToDt();
    System.out.println("Valid to: " + ckdt.getAsTimestamp(true));
    // Valid to: 2020-03-18T18:59:59-05:00
    dt = ckdt.GetDtObj(true);
    System.out.println(dt.get_Day() + "/" + dt.get_Month() + "/" + dt.get_Year() + "  " + dt.get_Hour() + ":"
         + dt.get_Minute());
  }
}