Sending http request

[shivang sarawagi]

Hi friends

I just need a little help. Kind of stranded don't know how to proceed. If you could please help me out.

I am developing a facebook application in java. For that I have to go through an authentication process for the app.

These are the steps

1.Create a Facebook Application

2. Request https://graph.facebook.com/oauth/authorize?client_id=MY_API_KEY& redirect_uri=http://www.facebook.com/connect/login_success.html&
scope=publish_stream,offline_access,create_event

3.Facebook will redirect you to http://www.facebook.com/connect/login_success.html? code=MY_VERIFICATION_CODE

4.Request https://graph.facebook.com/oauth/access_token?client_id=MY_API_KEY& redirect_uri=http://www.facebook.com/connect/login_success.html& client_secret=MY_APP_SECRET&code=MY_VERIFICATION_CODE

5.Facebook will respond with access_token=MY_ACCESS_TOKEN

For the second step I used response.sendRedirect(); and sent the request. But as per the third request when the facebook redirects me to a url its just a page with
success written in it. Now I don't know how to proceed with the 4th step.

How do I extract the verification code and put in another request and send it

Can you please tell is there any way to send the request again, maintaining the flow of the app.

Thanks