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Java Java Objects Delivering the MVP Forum

Miguel Rivas
Miguel Rivas
4,902 Points

Getting error on constructor

Hey guys,

I'm on task 3 of 4 - Java Objects, can't clear the message error :

"Bummer! Make sure you've added a new constructor to the ForumPost class that accepts a User named author, a String named title, and another String named description."

I can't realize what's missing, how do I "accept User Strings" on the constructor?

public class Forum {
  private String topic;

  // TODO: add a constructor that accepts a topic and sets the private field topic
  public Forum (String topic){
    topic = "";

  public String getTopic() {
    return topic;

  /* Uncomment this when you are prompted to do so
  public void addPost(ForumPost post) {
    System.out.printf("A new post in %s topic from %s %s about %s is available",

public class User {
  // TODO: add private fields for firstName and lastName
  private String firstName;
  private String lastName;

  public User(String firstName, String lastName) {
    // TODO: set and add the private fields
    firstName = "";
    lastName = "";


  public String getFirstName(){
    return firstName;

  public String getLastName(){
    return lastName;

  // TODO: add getters for firstName and lastName

public class ForumPost {

  private String author;
  private String title;
  private String description;

  // TODO: add a constructor that accepts the author, title and description
  public ForumPost(String author, String title, String description){
    this.author = "author";
    this.title = "title";
    this.description = "description";

  public User getAuthor() {
    return author;

  public String getTitle() {
    return title;

  public String getDescription() {
    return description;
public class Main {

  public static void main(String[] args) {
    System.out.println("Beginning forum example");
    if (args.length < 2) {
      System.out.println("Usage: java Main <first name> <last name>");
      System.err.println("<first name> and <last name> are required");
    /* Uncomment this when prompted
    Forum forum = new Forum("Java");
    // TODO: pass in the first name and last name that are in the args parameter
    User author = new User();
    // TODO: initialize the forum post with the user created above and a title and description of your choice
    ForumPost post = new ForumPost();

// */


3 Answers

  private User mAuthor;
  private String mTitle;
  private String mDescription;

 // should get the value of the parameters of this Constructor
  public ForumPost(User author, String title, String description){
   mAuthor= author;
   mTitle= title;
   mDescription= description;

I havent checked the Challange yet. But i guess thats what the challange wants form you

John Grillo
John Grillo
30,241 Points

Hey, why is that for the ForumPost constructor, the first parameter was User author instead of String author ?

this worked for me:

public ForumPost(User author,String title, String description){ this.author=author ; this.title=title; this.description=discription;


Miguel Rivas
Miguel Rivas
4,902 Points

Effectively the problem was in the "User author" fragment. I was looking for my own thread so I don't get to bother anyone but you were faster than me.

Thank you for posting man.