Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialVlad Zap
2,596 PointsHEEELP. I don't know what's my problem...
Please Help
public class Forum {
private String topic;
// TODO: add a constructor that accepts a topic and sets the private field topic
public Forum(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()
);
}
}
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 the private fields here
firstName = this.firstName;
lastName = this.lastName;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
}
// TODO: add getters for firstName and 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){
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;
}
}
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");
//Take the first two elements passed args
User author = new User(args[0], args[1]);
//Add the author, title and description
ForumPost post = new ForumPost(author, "A Title", "A Description");
forum.addPost(post);
}
}
1 Answer
Nikola Nikolovski
1,178 PointsThis is not the proper way to initialize firstName = this.firstName; lastName = this.lastName;
Just change the positions: this.firstName = firstName; this.lastName = lastName;