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Java Java Objects Delivering the MVP Forum

Fixing code in Main.Java

Please help, I can't see my error.

Forum.java
public class Forum {
  private String mTopic;

  public String getTopic() {
      return mTopic;
  }

  public Forum(String topic){
    mTopic = topic;
  }


public void addPost(ForumPost post) {
       //When all is ready uncomment this...
       System.out.printf("New post from %s %s about %s.\n",
                         post.getAuthor().getFirstName(),
                         post.getAuthor().getLastName(),
                         post.getTitle());
  }


}
User.java
public class User {
  private String firstName;
  private String lastName;

  public User(String firstName, String lastName) {
    // TODO:  Set the private fields here
    firstName = this.firstName;
    lastName = this.lastName;    
  }

  public String getFirstName() {
    return firstName;
  }

  public String getLastName() {
    return lastName;
  }
  }
ForumPost.java
public class ForumPost {
  private User mAuthor;
  private String mTitle;
  private String mDescription;

  public ForumPost(User author, String title, String description) {
    mAuthor = author;
    mTitle = title;
    mDescription = description;
  }

  public User getAuthor() {
    return mAuthor;
  }

  public String getTitle() {
    return mTitle;
  }

  // TODO: We need to expose the description
  public String getDescription() {
    return mDescription;
  }


}
Main.java
public class Main {

  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
    //String firstName = args[0];
 // String lastName = args[1];

    User author = new User(args[0],args[1]);
    // Add the author, title and description
    ForumPost post = new ForumPost(author, "This is your forum post Title", "This is your forum post Description");
    forum.addPost(post);
  }
  }
Martin Klestil
Martin Klestil
5,520 Points

is there an error message? or what is there?

Hi,

The error appears at Main.Java section. It's saying remember to use args[0] for first name and args [1] for the surname.

2 Answers

Hi,

The error appears at Main.Java section. It's saying remember to use args[0] for first name and args [1] for the surname.

Martin Klestil
Martin Klestil
5,520 Points

The error message also confused me at first, your mistake is in User you have to turn over the values in the constructor.

public class User {
  private String firstName;
  private String lastName;

  public User(String firstName, String lastName) {
    // TODO:  Set the private fields here
    this.firstName = firstName;
    this.lastName = lastName;
  }

I hope I could help you