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Java Java Objects Delivering the MVP Forum

Tiffany Tan
Tiffany Tan
2,441 Points

How to Initialize the forum post with the user created above and a title and description of your choice

So in the Main.java, you have to initialize the forum post with the user created above and a title and description of your choice. Isn't this how you do it? I am still confused about the term initialize too...

Forum.java
public class Forum {
  private String topic;

  // TODO: add a constructor that accepts a topic and sets the private field topic
  public lolTopic(String topic) {
    this.topic = topic;
  }
  public String getTopic() {
    return topic;
  }



  public void addPost(ForumPost post) {
    System.out.printf("A new post in %s topic from %s %s about %s is available",
            topic,
            post.getAuthor().getFirstName(),
            post.getAuthor().getLastName(),
            post.getTitle()
    );
  }


}
User.java
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
    this.firstName = firstName;
    this.lastName = lastName;
  }

  // TODO: add getters for firstName and lastName
  public String getFirstName() {
    return firstName;
  }
  public String getLastName() {
    return lastName;
  }
}
ForumPost.java
public class ForumPost {
  private User author;
  private String title;
  private String description;

  // TODO: add a constructor that accepts the author, title and description
  public description(User 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;
  }
}
Main.java
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");
      System.exit(1);
    }

    Forum forum = new Forum("Java");
    // TODO: pass in the first name and last name that are in the args parameter
    User author = new User(args[0],args[1]);
    // TODO: initialize the forum post with the user created above and a title and description of your choice
    ForumPost post = new ForumPost(author,"dsdcs","sfdwdsc");
    forum.addPost(post);


  }

}

2 Answers

I'm wrong - your Forum constructor isn't correct.

  public lolTopic(String topic) {
    this.topic = topic;
  }

This should be called Forum not lolTopic.

Steve.

Your ForumPost constructor is also called the wrong thing. All constructors take the name of their class. So change description to ForumPost:

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

Hi Tiffany,

That looks fine to me at first glance. Let me run your code through the challenge and see what issue it is having.

Steve.

Tiffany Tan
Tiffany Tan
2,441 Points

Fixed my mistake, it worked! Thanks a lot!!