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Java Java Objects Delivering the MVP Forum

Taebin You
Taebin You
4,786 Points

Java objects Forum codes

After you uncomment the code in Main.java and Forum.java, fix the code as described in the comments of Main.java. The code in main is attempting to use the code you just fixed.

I don't get what I am supposed to do. Help!?

Forum.java
public class Forum {
  private String topic;

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

  }

  public String getFirstName(){
   return firstName; 
  }

  public String getLastName(){
   return lastName; 
  }

  // TODO: add getters for firstName and 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.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();
    // 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);


  }

}

4 Answers

Brendan Whiting
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Brendan Whiting
Front End Web Development Techdegree Graduate 84,738 Points
  • You need to pass in the firstName and lastName arguments when you create the new User. These should come from the args array that gets passed into the main method.
  • You'll need to pass in that user object as well as a title and description when you create the new ForumPost.
  • There's also a problem back in Forum.java - your constructor method isn't named correctly

Let me know if you need any more pointers.

Taebin You
Taebin You
4,786 Points

Figured it out just a sec before you replied! Thx tho

Akshay Ramdasi
Akshay Ramdasi
14,065 Points

please tell me the answer for this I have added the code that I want in order to complete this stage!!

Akshay Ramdasi
Akshay Ramdasi
14,065 Points

can you tell me the exact code for this task to complete!! I am tired of writing the code and checking it hundreds of time.

Cameron Hastings
Cameron Hastings
3,439 Points

PLEASE... I've been at this all day. Someone please provide solutions to this task..

Akshay Ramdasi
Akshay Ramdasi
14,065 Points

Please Tell me how you have passsed

 ForumPost post = new ForumPost();

Share Your answer code please!

Taebin You
Taebin You
4,786 Points

I can't recall really, but pretty much what Brendan says is right on