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Java Java Objects Delivering the MVP Forum

Pratham Mishra
PLUS
Pratham Mishra
Courses Plus Student 935 Points

I don't know what is this task asking to do??? So can I get help for this problem

In User.java, add private fields to store firstName and lastName, and initialize them in the provided constructor. Add public getters for firstName and lastName.

Forum.java
public class Forum {
  private String topic;

  // TODO: add a constructor that accepts a topic and sets the private field topic

  public String getTopic() {
    return topic;
  }

 public Forum(String topic) {
//set mTopic to the topic passed in to the constructor
mTopic = 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 {
  private String mFirstName;
  private String mLastName;

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

  public String getFirstName(){
    return mFirstName;
  }

  public String getLastName(){
    return mLastName;
  }

}
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 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
    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();
    forum.addPost(post);

// */
  }

}

Hey @pratham,

Did you find a solution for this challenge already?

4 Answers

Marco Dagostino
Marco Dagostino
15,590 Points

Hi,

In the User Constructor, the passing param should not have any access modifiers.

The constructor should have this form:

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

Good answer Marco, thank you!

Did an upvote!

Presley Cobb
Presley Cobb
971 Points

I dont understand why you have private for the first name parameter in your constructor. Also I like to refer to my member variables using (this.). Try changing that and removing private.

Pratham Mishra
PLUS
Pratham Mishra
Courses Plus Student 935 Points

yeah I have got my mistake in it and I have got the solution for it too. Thanks to u all. Regards, Pratham