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Start your free trialGabrielle Harris
13,135 PointsI'm not sure what I'm doing wrong and I can't move forward
I tried User and author and it's late and I can't seem to get this right.
Thanks in advance.
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 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);
}
Forum forum = new Forum("Java");
// TODO: pass in the first name and last name that are in the args parameter
User author = new User(args[2]);
// TODO: initialize the forum post with the user created above and a title and description of your choice
ForumPost post = new ForumPost(User, "Title", "Description");
forum.addPost(post);
// */
}
}
1 Answer
Dave Harker
Courses Plus Student 15,510 PointsHi Gabrielle,
Looks like you're not initialising the private variables with the arguments passed in for several of the files. Also, when initialising a new User in main you'll need both String[] args (firstname and lastname) ... so args[0], args[1] ... mine looks like this:
Forum.java
public class Forum {
private String 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()
);
}
}
User.java
public class User {
private String firstName;
private String lastName;
public User(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName() {
return this.firstName;
}
public String getLastName() {
return this.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;
this.title = title;
this.description = description;
}
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");
User author = new User(args[0], args[1]);
ForumPost post = new ForumPost(author, "title", "description");
forum.addPost(post);
}
}
Hope that helps, and happy coding.
Dave.
Gabrielle Harris
13,135 PointsGabrielle Harris
13,135 PointsThank you so much for your help!