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Start your free trialMary Morin
2,591 PointsForumPost.java
I'm having a lot of trouble on the 3rd task that deals with ForumPost.java. I can't for the life of me figure out how to complete it and I've tried so many different things. I think I should be using args but I'm not sure. Any help?
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;
}
private Forum(String topic){
this.topic = 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
this.firstName = firstName;
this.lastName = lastName;
}
public String getFirstName(){
return firstName;
}
public String getLastName(){
return lastName;
}
// TODO: add getters for firstName and lastName
}
public class ForumPost {
public static void main (String[] args){}
private User author;
private String title;
private String description;
// TODO: add a constructor that accepts the author, title and description
public User getAuthor() {
return author;
}
public String getTitle() {
return title;
}
public String getDescription() {
return description;
}
public ForumPost(String title, User author, String description){
title = title(args[0]);
author = author(args[0], args[1]);
description = description(args[0]);
}
}
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();
// TODO: initialize the forum post with the user created above and a title and description of your choice
ForumPost post = new ForumPost();
forum.addPost(post);
// */
}
}
2 Answers
Jose Melendez
4,740 Pointspublic ForumPost(User author, String title, String description) {
this.author = author;
this.title = title;
this.description = description;
}
Konstantinos Pedarakis
21,301 Pointshi Mary Morin ,
in this // TODO: pass in the first name and last name that are in the args parameter you should pass the first and second argument of the args. due that args is a String array you can do this.
// TODO: pass in the first name and last name that are in the args parameter
User author = new User(args[0], args[1]);
// TODO: initialize the forum post with the user created above and a title and description of your choice
ForumPost post = new ForumPost("title", author, "description");
forum.addPost(post);
and in the ForumPost.java you just set the constructor like this.
public ForumPost(User author, String title, String description){
this.author = author;
this.title = title;
this.description = description;
}
Hope that helps.