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Start your free trialkumbirai mangwanda
1,628 PointsAfter you uncomment the code in Main.java and Forum.java, fix the code as described in the comments of Main.java.
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.
what is it i'm doing wrong there??
public class Forum {
private 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",
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;
public ForumPost (User author, String title, String description) {
this.author = author;
this.title = title;
this.description = 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);
}
Forum forum = new Forum("Java");
User author = new User(args[0], args[1]); // Add args[0] and args[1] those are the first arguments presented which translate to firstName and lastName variables.
ForumPost post = new ForumPost( author, "title", "description"); // Look at ForumPost.java it is looking for an author, title, and discription so put
// author, "title", and "description" inside of ForumPost(""HERE"")
forum.addPost(post);
// *
}
}
1 Answer
Steven Parker
231,172 PointsThis one was a bit tricky to find, since the issues occurred in task 1, but the validation did not catch them until task 4!
When adding the new constructor for "Forum" in task 1, the code was not placed beneath the comment but above it. While this would not cause a problem itself, adding the new code accidentally replaced a line that was originally provided above the comment which declared the field "topic". That line needs to remain in the code.
The other issue is that the access of the new constructor was set to "private" instead of "public".
Fix those up and you're good to go!