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Java Java Objects (Retired) Delivering the MVP Wrapping up

Benjamin Ing
Benjamin Ing
910 Points


not sure where I am wrong.. the forum post in example should be right... un sure on my new user.. passing args as an argument

public class ForumPost {
  private User mAuthor;
  private String mTitle;
  private String mDescription;

  public ForumPost(User user, String title, String description) 
    mAuthor = user;
    mTitle = title;
    mDescription = description;
  public User getAuthor() {
    return mAuthor;

  public String getTitle() {
    return mTitle;
public String getDescription(){
  return mDescription;
  // TODO: We need to expose the description
public class User {
  private String mFirstName;
    private String mLastName;

  public User(String firstName, String lastName) {
    // TODO:  Set the private fields here
    mFirstName = firstName;
    mLastName = lastName;
  public String getFirstName(){
    return mFirstName;
  public String  getLastName(){
  return mLastName;

public class Forum {
  private String mTopic;

  public Forum(String topic){
  mTopic = topic;
  public String getTopic() {
      return mTopic;

  public void addPost(ForumPost post) {
      System.out.printf("New post from %s %s about %s.\n",
public class Example {

  public static void main(String[] args) {
    System.out.println("Starting forum example...");
    if (args.length < 2) {
       System.out.println("first and last name are required. eg:  java Example Craig Dennis");
    Forum forum = new Forum("Java");
    // Take the first two elements passed args
    User author = new User(args[0],args[1]);
    // Add the author, title and description

     ForumPost post = new ForumPost(author, yay ,treehouse ); // the second two need to be strings

3 Answers

ForumPost post = new ForumPost(author, yay ,treehouse );

I added a comment, but the second two parameters need to be Strings so must be surrounded by " and ".

There may be other problems too - but try that first! We can go from there ...


Seth Kroger
Seth Kroger
56,412 Points

At the end of the addPost() method in Forum.java there is a stray */ still from a comment that was removed.

Well spotted! :-)

Craig Dennis
Craig Dennis
Treehouse Teacher

I don't see the variable yay or treehouse defined anywhere. ;)