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Start your free trialAllen Emejuobi
5,009 PointsForumPost challenge
I seem to be stuck on the last part of the forum challenge. I get an error message for the forumPost.java page line 8 where I have author = "";. Can anyone help me understand how to get through this part?
public class Forum {
private String topic;
// TODO: add a constructor that accepts a topic and sets the private field topic
public Forum(String topic){
topic = "";
}
public String getTopic() {
return 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()
);
}
}
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
firstName = "";
lastName = "";
}
// TODO: add getters for firstName and lastName
public String getFirstName(){
return firstName;
}
public String getLastName(){
return lastName;
}
}
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){
author = "";
title = "";
description = "";
}
public User getAuthor() {
return author;
}
public String getTitle() {
return title;
}
public String getDescription() {
return description;
}
}
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("Allen", "Emejuobi");
// TODO: initialize the forum post with the user created above and a title and
//description of your choice
ForumPost post = new ForumPost(author, "Java Training", "I am learning Java");
forum.addPost(post);
//
}
}
1 Answer
Samuel Moisan
11,953 PointsHi Allen,
You should assign the parameter value to the member value like this.
// 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;
}
You can assign an empty value too, but you will need to set the value after the object creation, this is not very useful. I hope this can help you!
Allen Emejuobi
5,009 PointsAllen Emejuobi
5,009 PointsI appreciate it! Thanks a lot