Welcome to the Treehouse Community
Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.
Start your free trialNicklas Millard
9,542 PointsWhat am I doing wrong?
I've attached my code...
public Set<String> getAllAuthors() {
Set<String> allAuthors = new TreeSet<String>();
for (String author : getPosts()) {
allAuthors.add(author);
}
return allAuthors;
}
[Mod - formatting fix]
1 Answer
Seth Kroger
56,413 PointsIn your for loop, you're looping over a list of BlogPosts, not Strings. To get the authors, you need to get the author from each post inside the loop.
public Set<String> getAllAuthors() {
Set<String> allAuthors = new TreeSet<String>();
for (BlogPost post: getPosts()) {
allAuthors.add(post.getAuthor());
}
return allAuthors;
}