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

ArrayList Objective

The question is :

Let's add a method that returns a list of all links in the body of the document. All words that start with http should be considered links. Name it getExternalLinks.

NOTE: Remember to import the needed classes from java.util. HINT: We already made the getWords method, we should use it!

it says that my syntax is correct but i get the bummer message: Did you forget to add the getExternalLinks method?

Im confused as to why this code isn't working for the challenge

com/example/BlogPost.java
package com.example;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;

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+");
  }

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

  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;
  }
}

2 Answers

Alexander Nikiforov
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Alexander Nikiforov
Java Web Development Techdegree Graduate 22,175 Points

Remove argument String link from getExternalLinks. This getter is not supposed to take arguments.

Code challenge is looking for method getExternalLinks() - no args, whereas you have only getExternalLinks(String link)

Ian Taylor
Ian Taylor
Courses Plus Student 1,420 Points

Thanks Alexander your reply to Fredrick helped me solve the question. I had the exact same problem.

Thanks a lot Alex that was killing me