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Java Java Objects Delivering the MVP Forum

omkar chendwankar
omkar chendwankar
1,668 Points
Posted by omkar chendwankar
omkar chendwankar
1,668 Points

After you uncomment the code in Main.java and Forum.java, fix the code as described in the comments of Main.java. The co

plz help me with this

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) {
    this.firstName=firstName;
    this.lastName=lastName;
    // TODO: set and add the private fields

  }

  public String getFirstName(){
    return this.firstName;
  }
  public String getLastName(){
    return this.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);
  }

}

1 Answer

Unsubscribed User
Unsubscribed User
1,321 Points
Unsubscribed User
Unsubscribed User
1,321 Points

Hello, Here are just some things I spotted in your code.

  public topic(String topic){ // Change first method name 'topic' to 'forum'.
    this.topic=topic;
  }

public String getFirstName(){
    return firstName; // Only use 'this.' when compairing two of the same.
  }
  public String getLastName(){
    return lastName;
  }

    Forum forum = new Forum("Java");
    User author = new User(); // Add args[0] and args[1] those are the first arguments presented which translate to firstName and lastName variables.
    ForumPost post = new ForumPost(); // Look at ForumPost.java it is looking for an author, title, and discription so put
// author, "title", and "description" inside of ForumPost(""HERE"") 
    forum.addPost(post);