Today I have been learning facebook java api. Although I have successfully created a “hello world” app, I had a hard time to figure out how to show the grant access page. I need user to grant access to the application, so I can retrieve user data. I know I just need to redirect the page, but I tried req.sendRequest(URL) does not seem working somehow.. and I found out I set the wrong content type.. opp! stupid me! but instead of using sendRequest, I used fb tag: