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Java Java Objects Delivering the MVP Forum

Thiago Silva
Thiago Silva
715 Points

I am out of ideas on how to solve this exercise. My constructor does not work.

I have tried several different ways to pass the args and create the user based on the example given in the video, but nothing seems to work. Can anyone please help me?

Forum.java
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;
  }


  // 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",
            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 ForumPost(User author, String title, String description) {
    this.User(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);
    }
    // Uncomment this when prompted
    ForumPost forumPost = new ForumPost(args[0]);
    // TODO: pass in the first name and last name that are in the args parameter
      User user = new User(ForumPost);


    // TODO: initialize the forum post with the user created above and a title and description of your choice
    ForumPost post = new ForumPost(user,"Java", "Last exercise");
    forum.addPost(post);

// */
  }

}

1 Answer

tomandrews
tomandrews
13,183 Points

This may work, not sure why you had something in brackets after you wrote this.User

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