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Start your free trialJordan Bartholomew
5,926 PointsJava Objects Constructor
I can't figure out any of these challenges. Can someone help me finish this? Thanks
Challenge Task 1 of 4
Can I please borrow your object powers to help me finish out this Forum prototype I've been working on? We'll go through a couple of steps here, like always, just follow the prompts for each step. Let's do this!
Add a constructor that accepts a String named topic to Forum.java. Initialize the private field topic in the constructor to the value passed in.
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;
}
/* 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
public User(String firstName, String lastName) {
// TODO: set and add the private fields
}
// 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 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);
}
/* 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);
// */
}
}
Chris Tvedt
3,795 PointsMarcus that is not helpful. You should explain his mistakes or at least thoroughly comment your code so he can read it and learn from it. He learns little by just copying and pasting your code.
Marcus Yow
12,929 PointsMarcus Yow
12,929 PointsBelow I've posted answers to the challenge.
Forum.java
User.java
ForumPost.java
Main.java