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Java Java Objects (Retired) Delivering the MVP Wrapping up

Ronit Mankad
Ronit Mankad
12,166 Points
Posted by Ronit Mankad
Ronit Mankad
12,166 Points

Initializing error

i get message: "Did you initialize the mFirstName field in the constructor?"

ForumPost.java 
public class ForumPost {
  private User mAuthor;
  private String mTitle;
  private String mDescription;

  public User getAuthor() {
    return mAuthor;
  }

  public String getTitle() {
    return mTitle;
  }

  // TODO: We need to expose the description
}
User.java 
public class User {
     private String mLastName;
     private String mFirstName;
  public User(String firstName, String lastName) {
    // TODO:  Set the private fields here

  }
}
Forum.java 
public class Forum {
  private String mTopic;

  public String getTopic() {
      return mTopic;
  }

  public  Forum(String que) {
    mTopic=que;
  }
  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());
      */
  }
}
Example.java 
public class Example {

  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
    // User author = new User();
    // Add the author, title and description
    // ForumPost post = new ForumPost();
    // forum.addPost(post);
  }
}

1 Answer

Grigorij Schleifer
Grigorij Schleifer
10,365 Points
Grigorij Schleifer
Grigorij Schleifer
10,365 Points

Hi Ronit,

inside the User class:

public class User {
     private String mLastName;
     private String mFirstName;

public User(String firstName, String lastName) {
     mFirstName = firstName;
     mLastName = lastName;
// assign the constructor arguments  to the field variables of the User class
  }
}

Grigorij