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

Enyang Mercy
PLUS
Enyang Mercy
Courses Plus Student 2,339 Points

ArrayList/LinkedList a method with that return list of links

STUCK!!!! I can't figure out where i have gone wrong. Any suggestion with the right code

com/example/BlogPost.java
package com.example;
import java.util.Arraylist;
import java.io.Serializable;
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+");
  }

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

3 Answers

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! I received your request for assistance. First, let me say that you're doing terrific!

Now to the problem. You're either going to love or hate this answer. You have a typo in your import statements.

You typed:

import java.util.Arraylist;

But you meant to type:

import java.util.ArrayList;

Note the capitalization of the "L" in "List" in the second version. When I change that one letter, your code passes the challenge. Well done! :sparkles:

Hi there,

Your errors show that ArrayList is unknown - that's because your import doesn't have a capital L in it. Change that and your code is fine.

Steve.

:+1: