(Java) Delete All IMAP Email

Demonstrates two ways to delete all email in a mailbox on an IMAP server.

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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[])
  {
    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkImap imap = new CkImap();

    // Turn on session logging:
    imap.put_KeepSessionLog(true);

    // Connect to an IMAP server.
    // Use TLS
    imap.put_Ssl(true);
    imap.put_Port(993);
    boolean success = imap.Connect("imap.someMailServer.com");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Login
    success = imap.Login("myLogin","myPassword");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Select an IMAP mailbox
    success = imap.SelectMailbox("Inbox.RubyMail");
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    CkMessageSet messageSet;

    // Get the complete set of Uids for email in the selected mailbox.
    messageSet = imap.GetAllUids();
    if (imap.get_LastMethodSuccess() != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Set the Deleted flag for each message.
    // (ExpungeAndClose must be called to finalize the delete.)
    success = imap.SetFlags(messageSet,"Deleted",1);
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Alternatively, the Deleted flag may be set for each UID
    // individiually, but this is less efficient:
    int i;
    int n = messageSet.get_Count();
    for (i = 0; i <= n - 1; i++) {
        success = imap.SetFlag(messageSet.GetId(i),messageSet.get_HasUids(),"Deleted",1);
        if (success != true) {
            System.out.println(imap.lastErrorText());
            return;
            }

        }

    // Expunge and close the mailbox.
    success = imap.ExpungeAndClose();
    if (success != true) {
        System.out.println(imap.lastErrorText());
        return;
        }

    // Display the session log.
    System.out.println(imap.sessionLog());

    // Disconnect from the IMAP server.
    success = imap.Disconnect();
  }
}