/**
 * Inheritance Example
 * socialnetwork Example
 * Source code file: NewsFeed.java

 * The NewsFeed class stores news posts for the
 * news feed in a social network application
 * (like FaceBook or Google+).
 *
 * Display of the posts is currently simulated
 * by printing the details to the terminal.
 * (In a later version, this should display in a
 * browser.)
 *
 * This version does not save the data to disk,
 * and it does not provide any search or ordering
 * functions.
 *
 * Source: Objects First with Java
 * @author Michael Koelling and David J. Barnes
 * @version 0.2
 */
import java.util.ArrayList;
public class NewsFeed {
    private ArrayList<Post> _posts;

    /**
     * Construct an empty news feed.
     */
    public NewsFeed( ) {
        _posts = new ArrayList<Post>();
    }

    /**
     * Add a post to the news feed.
     *
     * @param post  The post to be added.
     */
    public void addPost(Post post) {
        _posts.add(post);
    }

    /**
     * Show the news feed. Currently: print the news feed details
     * to the terminal. (To do: replace this later with display
     * in web browser.)
     */
    public void show() {
        // display all posts
        for(Post post : _posts) {
            post.display();
            System.out.println();   // empty line between posts
        }
    }
}