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 trialAtul Varma
4,285 PointsHow am I supposed to pass first name and last name in ForumPost in Main.java ?
Help with the ForumPost initialization ...??
public class Forum {
private String topic;
// TODO: add a constructor that accepts a topic and sets the private field topic
public String getTopic() {
return topic;
}
public Forum(String topic){
this.topic = 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 and add the private fields
this.firstName = firstName;
this.lastName = 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){
this.author = author;
this.title = title;
this.description = 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);
}
Forum forum = new Forum("Java");
// TODO: pass in the first name and last name that are in the args parameter
User author = new User("first name", "last name");
// TODO: initialize the forum post with the user created above and a title and description of your choice
ForumPost post = new ForumPost("first name" "last name","inferno","thriller");
forum.addPost(post);
}
}
Ryan Schron
1,084 PointsRyan Schron
1,084 PointsHi Atul,
It looks to me like your ForumPost constructor is expecting a User object, not a first name and last name. There's an important distinction to be made here in that the User object is a sort of wrapper around the data it contains (first name, last name). Its like packaging items to send in the mail... on my end I am expecting your whole package, not the individual contents. Try doing this instead:
ForumPost post = new ForumPost(author,"inferno","thriller");
Remember, you already made a User object called author. The ForumPost wants that object, not its information.
I hope that helps with your problem.