[Error] Reading mails and replying at the same time

Hello All

I am developing an application in which i m reading the mails from a gmail account using imap.gmail.com . The code is reading perfectly fine .

Now my code when finds a new email it reply back the mail using javamail
and for sending mail i m making a session smtp.gmail.com
and mailing the desired message back to the sender .

Now the logics good to me but i knew i will be having trouble with the session as the session i took during reading will not allow me to have a session to send the mails to the sender in the same code .

And when i executed it is reading the emails perfectly but when the mail is sending i get an Exception

Code:

---

Access to default session denied

---

So plz help me in this and one thing

is my suggestion correct that when i find a new mail i stop the current code and run the sending program in this session overlapping problem will not be there but it is untidy and not efficient suggestion so plz help me :)
Thanks in adv :)

First of all, please post the complete exception you comes with.

Secondly, you should implement these two process in different threads, rather in one. I cannot say much about your session without looking at what you've done, so better to post at-least the relevant code block here to see.

First of all, please post the complete exception you comes with.

Secondly, you should implement these two process in different threads, rather in one. I cannot say much about your session without looking at what you've done, so better to post at-least the relevant code block here to see.

this is the only line i m getting as exception
and yes i m trying to use 2 threads let me try that first but i dnt think it is efficient enough and i have a doubt over session even using 2 different thread let me try and i will get back to u soon :) thanks for your reply :)

Use of multiple threads not totally support you to solve the problem. But it could gain the efficiency in your application. Looking at your exception I wonder how did you get that only one line. Did you customize the exception, can't you print the complete trace of it?

hi

i m trying the thread method but unfortunately i m not able to close the thread which is reading the mails so i can not proceed to send the mail plz help this is my code

and the output i m getting is

Code:

---

Reading value in run 1
Reading
imaps://gtbitinfo%40gmail.com@imap.gmail.com
saved details in id.ravs
calling close
In close
length of a is 2
Thread stopped
Thread stopped
Reading value 0
imaps://gtbitinfo%40gmail.com@imap.gmail.com
imaps://gtbitinfo%40gmail.com@imap.gmail.com
imaps://gtbitinfo%40gmail.com@imap.gmail.com

---

after
Reading value 0
it shud show the messages read but it is showing imaps:// ... that means it is still reading the mails

help plzz

thank you in advance :)

First of all, how did you confirmed that mail content is completely read?

I don't think that's your exact code, because you would get a NullPointerException here,

Code:

---

t=null;
System.out.println("Thread stopped");
reading=0;
System.out.println("Reading value "+reading);
t.stop();  //<-- null pointer

---

Your code also doesn't make any sense: You create a thread called "t". This thread creates an InboxReader and starts reading. It then calls close() whereupon it tries to stop itself? Or perhaps the InboxReader's constructor creates a new Thread that starts reading. This thread then calls close() whereupon it tries to stop an already stopped thread?

sorry for giving the wrong code
my code was

and i have tested inboxreader it reads my mails correctly as u can see the length of mails was 2 and i had 2 new mails so it is all perfect for reading stuff
but the thread is not finishing and not switching to displaying the mails info

plz help thank u :) for the replies

That's what I want to confirm too. In Close() method, nothing doing, just print some lines and close-up threads anonymously.

so kindly give me the way to stop the thread
i tried this.t.stop but then my code gets terminated so kindly help me in stopping the thread and changin the value of reading and again start the thread it will be a gr8 help to me

thanks in advance

There is nothing called thread stopping, which is an unsafe to do. Safest way is to rack the status of the thread.

Look at the following code.

Code:

---

    private Thread th;

    public void stop() {
        th= null;
    }

    public void run() {
        Thread thisThread = Thread.currentThread();
        while (th== thisThread) {
            try {
                // process
            }
            catch (Exception ex){
            }
        }
    }

---

As you can see if you want to stop the thread call the stop() and change the status. Alternatively the advantage here is any time you can start the same thread. Really not starting, you are using the same.

Read the following for more details.

Java Thread Primitive Deprecation

Thanks Eranga now my threads stops and everything is fine related to thread
but according to you i tried this thread method but unfortunately when the code runs it gives me same exception "Access to default session denied"
I decided to post my whole code and the output so that you can get perfect picture

output to this when i executed the code [NOTE : I had 2 mails in my inbox unread]

Code:

---

run:
Reading value in run 1
Reading
imaps://gtbitinfo%40gmail.com@imap.gmail.com
saved details in id.ravs
calling close
Sleep
called close
Reading value in run 0
Sending
FROM: "Sender email id",
TO: "My email id"@gmail.com,
SUBJECT: hi
SendDate: Sat Aug 28 13:24:14 IST 2010
"Sender email id"
Access to default session denied
FROM: "Sender email id,
TO: "My email id",
SUBJECT: Hi
SendDate: Thu Sep 02 01:05:18 IST 2010
"Sender email id"
Access to default session denied
FROM: "Sender email id",
TO: "My email id"@gmail.com,
SUBJECT: Coz i , walked the streets alone
SendDate: Sun Sep 05 11:50:02 IST 2010
"Sender email id"
Access to default session denied
Reading value in run 1
Reading
imaps://"my emailid"%40gmail.com@imap.gmail.com
BUILD STOPPED (total time: 21 seconds)

---

please help having no clue how to solve this problem as i had only one method that was via threading but it went in vain

Help needed thanks in advance

and thank you for ur replies :)

plzzzz help ppl :)

thnk u in adv :)

Can you post the complete error message to see?

Now i printed all the exception in sending class and now my output is with the exception

Code:

---

Reading value in run 1
Reading

imaps://xyz%40gmail.com@imap.gmail.com

saved details in id.ravs
calling close
Sleep
called close
Reading value in run 0

Sending

FROM: "" <emailid>,
TO: [email]xyz@gmail.com[/email],
SUBJECT: hi
SendDate: Sat Aug 28 13:24:14 IST 2010
emailid

Error in sending java.lang.SecurityException: Access to default session denied
Access to default session denied

FROM: "" <emailid>,
TO: [email]xyz@gmail.com[/email],
SUBJECT: Hi
SendDate: Thu Sep 02 01:05:18 IST 2010
"" <emailid>,
Error in sending java.lang.SecurityException: Access to default session denied
Access to default session denied

FROM: "" <emailid>,
TO: [email]xyz@gmail.com[/email],
SUBJECT: Coz i , walked the streets alone
SendDate: Sun Sep 05 11:50:02 IST 2010
emailid
Error in sending java.lang.SecurityException: Access to default session denied
Access to default session denied

Reading value in run 1

Reading

imaps://xyz%40gmail.com@imap.gmail.com

---



this is the exception plz help thnx :)

Please put printStackTrace() also to find the exact line also.

hi i now replaced println to printStack
and got the output

Code:

---

        at javax.mail.Session.getDefaultInstance(Session.java:316)
        at sending.sendSSLMessage(sending.java:63)
        at sending.send(sending.java:34)
        at Main.run(Main.java:84)
        at java.lang.Thread.run(Thread.java:637)
java.lang.SecurityException: Access to default session denied
        at javax.mail.Session.getDefaultInstance(Session.java:316)
        at sending.sendSSLMessage(sending.java:63)
        at sending.send(sending.java:34)
        at Main.run(Main.java:84)
        at java.lang.Thread.run(Thread.java:637)
java.lang.SecurityException: Access to default session denied
        at javax.mail.Session.getDefaultInstance(Session.java:316)
        at sending.sendSSLMessage(sending.java:63)
        at sending.send(sending.java:34)
        at Main.run(Main.java:84)
        at java.lang.Thread.run(Thread.java:637)

---

plz help :) thnx in adv :)

Rather than work around with the default instance, try getInstance().