I give up. I tried everything but i keep getting errors

Question

package com.example;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;


public class BlogPost implements Comparable<BlogPost>, Serializable {
  private String mAuthor;
  private String mTitle;
  private String mBody;
  private String mCategory;
  private Date mCreationDate;

  public BlogPost(String author, String title, String body, String category, Date creationDate) {
    mAuthor = author;
    mTitle = title;
    mBody = body;
    mCategory = category;
    mCreationDate = creationDate;
  }

  public int compareTo(BlogPost other) {
    if (equals(other)) {
      return 0;
    }
    return mCreationDate.compareTo(other.mCreationDate);
  }

  public String[] getWords() {
    return mBody.split("\\s+");
  }

  public List<String> getExternalLinks() {
    List<String> links = new ArrayList<String>();
    for (String word : getWords()) {
      if (word.startsWith("http")) {
        links.add(word);
      }
    }
    return links;
  }

  public String getAuthor() {
    return mAuthor;
  }

  public String getTitle() {
    return mTitle;
  }

  public String getBody() {
    return mBody;
  }

  public String getCategory() {
    return mCategory;
  }

  public Date getCreationDate() {
    return mCreationDate;
  }

  public Set<String> getAllAuthors() { //having a problem here
    Set<String> allAuthors = new TreeSet<String>(); 
    for (BlogPost post : getPosts()) {
     allAuthors.addAll(post.getAuthor()); 
    }
    return AllAuthors;
  }
}

Answer 1 · 2015-12-23T22:09:39Z

December 23, 2015 10:09pm

First off, you put the required method in the wrong class. You should be working on the Blog.java tab.

Secondly, it's not addAll() but rather just add(). We're only getting a single string per loop. Only one thing to add means just add()

And lastly, you spelled the name of your Set incorrectly on your return statement

Take a look below,

public Set<String> getAllAuthors() {  //<<<<<<<<<<<< make sure this is in the Blog.java tab
    Set<String> allAuthors = new TreeSet<String>(); 
    for (BlogPost post : getPosts()) {
     allAuthors.add(post.getAuthor());  // <<<<<<<<<<<< .add()
    }
    return allAuthors; //<<<<<<<<< incorrectly spelled before
  }

Let me know if that fixed it

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luis martinez

luis martinez

I give up. I tried everything but i keep getting errors

Kevin Faust

Kevin Faust

1 Answer

Kevin Faust

Kevin Faust

luis martinez

luis martinez