(Java) Iterate Keys and Certs in PEM

Demonstrates how to access each of the private keys and certs contained within a PEM.

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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[])
  {
    // Starting in v9.5.0.49, all Chilkat classes can be unlocked at once at the beginning of a program
    // by calling UnlockBundle.  It requires a Bundle unlock code.
    CkGlobal chilkatGlob = new CkGlobal();
    boolean success = chilkatGlob.UnlockBundle("Anything for 30-day trial.");
    if (success != true) {
        System.out.println(chilkatGlob.lastErrorText());
        return;
        }

    // The Chilkat PEM class was introduced in v9.5.0.49.  
    // It requires the bundle to be unlocked, as shown above.
    CkPem pem = new CkPem();

    // Load the PEM from a file.
    // If the PEM is encrypted, provide a password.  Otherwise pass an empty string for the password.
    String password = "myPassword";
    success = pem.LoadPemFile("../myPemFiles/myPem.pem",password);
    if (success != true) {
        System.out.println(pem.lastErrorText());
        return;
        }

    // Note: If the app already has the PEM pre-loaded in a string variable, then load it 
    // by calling LoadPem instead.  
    String pemContent = "... the PEM contents ...";
    success = pem.LoadPem(pemContent,password);
    // Check for success as before..

    // Iterate over the private keys.
    int numPrivateKeys = pem.get_NumPrivateKeys();
    int i = 0;

    while (i < numPrivateKeys) {

        CkPrivateKey privKey = pem.GetPrivateKey(i);
        System.out.println("Private Key " + i + " is " + privKey.get_BitLength() + " in length");

        i = i+1;
        }

    // Iterate over the certificates.
    int numCerts = pem.get_NumCerts();
    i = 0;

    while (i < numCerts) {

        CkCert cert = pem.GetCert(i);
        System.out.println("Certificate " + i + " : " + cert.subjectDN());

        i = i+1;
        }
  }
}