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Java Java Objects Delivering the MVP Forum

Christopher Sullivan
Christopher Sullivan
4,230 Points
Posted by Christopher Sullivan
Christopher Sullivan
4,230 Points

A little stuck on this last part of the objects on Java

I am getting the following error message

./Main.java:19: error: cannot find symbol forum.addPost(post); ^ symbol: method addPost(ForumPost) location: variable forum of type Forum Note: JavaTester.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 1 error

Forum.java 
public class Forum {
  private String topic;

  public Forum(String topic){
    this.topic = topic; // <--- same here :)
  }

  public String getTopic() {
    return topic;
  }
}
User.java 
public class User {
  private String firstName;
  private String lastName;

  public User(String firstName, String lastName) {
    this.firstName = firstName; // <--- your code will be different here
    this.lastName = lastName; //<---- and here
  }

  public String getFirstName(){
    return firstName;
  }

  public String getLastName(){
    return lastName;
  }

}
ForumPost.java 
public class ForumPost {
  private User author;
  private String title;
  private String description;

  public ForumPost(User author, String title, String description){
    this.author = author; //<--- your code will be different here
    this.title = title; // <---- and here
    this.description = description; //<---- aaand here 

  }

  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
    String firstName = args[0];
    String lastName = args[1];
    User author = new User(firstName, lastName); //<----- all cruicial points marked with comments
    // TODO: initialize the forum post with the user created above and a title and description of your choice

    ForumPost post = new ForumPost(author, "I just want to finish", "Chris");
    forum.addPost(post);


  }

}

1 Answer