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Daniel Hunter
4,622 PointsI don't really understand the instructions on this task.
I don't understand what exactly I am supposed to on this task.
task instructions - After you uncomment the code in Main.java and Forum.java, fix the code as described in the comments of Main.java. The code in main is attempting to use the code you just fixed.
I have un-commented the comments but have not done anything else.
public class Forum {
private String topic();
public Forum(String topic){
this.topic = topic;
}
// TODO: add a constructor that accepts a topic and sets the private field 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 {
private String firstName;
private String lastName;
// TODO: add private fields for firstName and 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 = descrption;
}
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();
// 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);
}
}
1 Answer
Ronald Williams
Java Web Development Techdegree Graduate 25,021 PointsHello Daniel, the task is asking you to accept the incoming first name and last name to create a user and then use that user to create a forum post. You can see my code below for the answer on how to do that.
For example, let's say that I want to run this application. I download the finished application and in my terminal I type: java Main Ronald Williams
Once I press enter, the Strings I entered "Ronald" and "Williams" are being stored in a String Array called args. Arrays start at 0 so to get the first name "Ronald" from the array we use args[0] and "Williams" as args[1].
In main, to make the User, you have to pass in a first name and last name. So we will pass in args[0], args[1]. Then we have a user named author with the stored value of firstName = Ronald and lastName = Williams. Finally we will make a forum post that takes a user, title, and description. So we will pass in the new user named author and then two literal strings for title and 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[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(author, "Post Title", "This is a description of my post.");
forum.addPost(post);
}
}