1. Go to “developers.facebook.com” and log in with your identity

2. Go to “My Apps” and create an application

3. Go to “Tools & Support” and check on “Access Token Tool”

4. Go to “Tools & Support” and check on “Graph API Explore”

5. If you want to publish a message with picture, you should make sure “publish_actions” is included in “Scopes.”

How to get your Page AccessToken and PageID

1. Go to https://developers.facebook.com/tools/explorer
2. At the GET request form, down there, fill in me/accounts
3. You’ll get a Javascript representation of your basic user data. Find the page you want.
4. Note the access_token and id fields, we’re going to use them in the code below.

 

import com.restfb.DefaultFacebookClient;
import com.restfb.FacebookClient;
import com.restfb.Parameter;
import com.restfb.exception.FacebookException;
import com.restfb.types.FacebookType;
import com.restfb.types.Page;
import com.restfb.types.User;


public class FacebookConnector {

    /* Variables */
    private final String pageAccessToken = "GET_THIS_FROM_THE_INSTRUCTIONS_ABOVE";
    private final String pageID = "THIS_TOO";
    private FacebookClient fbClient;
    private User myuser = null;    //Store references to your user and page
    private Page mypage = null;    //for later use. In this answer's context, these
                                   //references are useless.
    private int counter = 0;

    public FacebookConnector() {
        try {

            fbClient = new DefaultFacebookClient(pageAccessToken);
            myuser = fbClient.fetchObject("me", User.class);
            mypage = fbClient.fetchObject(pageID, Page.class);
            counter = 0;
        } catch (FacebookException ex) {     //So that you can see what went wrong
            ex.printStackTrace(System.err);  //in case you did anything incorrectly
        }
    }

    public void makeTestPost() {
        fbClient.publish(pageID + "/feed", FacebookType.class, Parameter.with("message", Integer.toString(counter) + ": Hello, facebook World!"));
        counter++;
    }

}