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Java Java Objects Delivering the MVP Forum

Posted by Conner Mack
Conner Mack
7,309 Points

challenge task 4 of 4

i dont know what i did wrong

Forum.java 
public class Forum {
  private String topic;

  public Forum(String topic){
    this.topic = topic; // <--- same here :)
  }

  public String getTopic() {
    return topic;
  }
User.java 
public class User {
  private String firstName;
  private String lastName;

  public User(String firstName, String lastName) {
      this.firstName = firstName;
      this.lastName = 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;


  public ForumPost(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");
    String firstName = args[0];
    String lastName = args[1];
    User author = new User(firstName, lastName);

    ForumPost post = new ForumPost(author, "Programming is awesome", "Cuz it makes us create new stuff");
    forum.addPost(post);


  }

}

1 Answer

Juraj Sallai
Juraj Sallai
7,188 Points
Juraj Sallai
Juraj Sallai
7,188 Points

Hi Conner,

It looks like you are missing addPost() method from Forum.java. You were supposed to uncomment this method in step 4.

public class Forum {
  private String topic;

  // TODO: add a constructor that accepts a topic and sets the private field topic
  public Forum(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()
    );
  } 

}