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Start your free trialjamalbacchus
Courses Plus Student 6,664 PointsI'm stuck!! please help.
I'm stuck could somebody help me?
public class Forum {
private String topic;
public Forum(String topic) {
topic = topic;
}
public String getTopic() {
return topic;
}
public void addPost(ForumPost post) {
System.out.printf("New post from %s %s about %s.\n",
post.getAuthor().getFirstName(),
post.getAuthor().getLastName(),
post.getTitle());
}
}
public class User {
private String firstName;
private String lastName;
public User(String firstName, String lastName) {
// TODO: Set the private fields here
firstName = firstName;
lastName = 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;
}
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");
String firstName = args[0];
String lastName = args[1];
User author = new User(firstName, lastName);
ForumPost post = new ForumPost(author, "title", "description");
forum.addPost(post);
}
}
1 Answer
Ted Dunn
43,783 PointsYour constructors in both the Forum and User classes are incorrect. You need to use the "this" keyword before the instance variable name to distinguish it from the parameter name.
Like so
public User(String firstName, String lastName) {
// TODO: Set the private fields here
this.firstName = firstName;
this.lastName = lastName;
}
public Forum(String topic) {
this.topic = topic;
}
jamalbacchus
Courses Plus Student 6,664 Pointsjamalbacchus
Courses Plus Student 6,664 PointsHi Ted,
thanks, i've made my changes but i'm still getting the error:
Bummer! Are you sure you used the arguments passed in from the main method in Main.java? args[0] is the firstName and args[1] should be the last name