javamail and gmail

1. The following code throws IndexOutOfBoundsException. Any idea why?

    Folder folder = store.getDefaultFolder();
    folder = folder.getFolder("INBOX");
   
    int totalMessages = folder.getMessageCount();
    //totalMessages is 17000
   
     folder.getMessages(16900, 16999)   --- here I am trying to get the NEWEST 99                                                                                         messages.
   

This code throws the exception indexoutofbounds even though there are so many mails. What am I doing wrong?

1. folder.getMessages() - get all the emails from 1st email to last. In my case 17000!! How do I get the emails开发者_高级运维 starting from newest to oldest? I only want to see the latest emails - around 100 of them. Is this possible?

Never us magic values in code, it will just cause you pain. Try:

int messagesToDisplay = 100;
folder.getMessages(totalMessages  - messagesToDisplay , totalMessages);

From the JavaDoc the messages are identified with a 1 based array not 0.

Can you also add the stack trace please.

please open the folder in read or read_write mode first.

folder.open(Folder.READ_WRITE);