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Start your free trialDerek Derek
8,744 PointsCompile time error
Can someone please help me pass this task? Also, should I declare the return type of the method getAllAuthors as Set<String> or TreeSet<String> ? Thank you in advance!
1 Answer
Steve Hunter
57,712 PointsHi there,
Make sure you include the correct import statements first.
Then, create the method that returns a Set
and takes no parameters. Inside, create the set to be returned; use a TreeSet
for ordering. Then iterate over all posts
in mPosts
using a for
loop adding the individual post's author to the set using add
and the post's getAuthor
method. Then return your Set
.
It'll look like this:
public Set<String> getAllAuthors(){
Set<String> allAuthors = new TreeSet<String>(); // create the set
for (BlogPost post : mPosts){ // iterate over all posts one at a time
allAuthors.add(post.getAuthor()); // get each post's author and add to set
}
return allAuthors; // return the set
}
I hope that helps,
Steve.