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Java Java Data Structures - Retired Exploring the Java Collection Framework Sets

Posted by Jhoset Ceron
Jhoset Ceron
16,280 Points

I've added a new class called Blog. It is initialized with a list of BlogPost objects. Create a method in the Blog class

I don't know what am I doing wrong, can someone help?

Kevin Faust
Kevin Faust
15,353 Points
Kevin Faust
Kevin Faust
15,353 Points

paste your code here

Jhoset Ceron
Jhoset Ceron
16,280 Points 
package com.example;

import java.util.List;
import java.util.Set;

public class Blog {
  List<BlogPost> mPosts;

  public Blog(List<BlogPost> posts) {
    mPosts = posts;
  }

  public List<BlogPost> getPosts() {
    return mPosts;
  }
  public Set<String> getAllAuthors() {
    Set <String> set = new TreeSet();
    for (BlogPost authorName : mPosts) {
     set.add(authorName.getAuthor()); 
    }
    return set;
  }
}

1 Answer

Kevin Faust
Kevin Faust
15,353 Points
Kevin Faust
Kevin Faust
15,353 Points

import java.util.TreeSet;

You forgot to import TreeSet

Jhoset Ceron
Jhoset Ceron
16,280 Points

Thank you, Kevin. It Worked :)