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Java Java Data Structures Exploring the Java Collection Framework ArrayLists

Peng Chen
Peng Chen
4,955 Points

Stage 3_ Using ArrayList_Task

Could somebody tell me why my code doesn't work? It said there is a syntax error in my getExternalLink() method .

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

import java.io.Serializable;
import java.util.Date;
import java.util.*;

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> ls = new ArrayList<String>();
    for(String word : getWords()){
      if(word.starstWith("http")){
        ls.add(word);
      }
    }
    return ls;
  }
}

1 Answer

Michael Hess
Michael Hess
24,511 Points

Hi Peng,

I modified the code slightly to pass the challenge. This should work:

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

    }
  return ls;
}
}
if(word.starstWith("http")){

startsWith was spelled as starstWith

Everything else is looking good!

Hope this helps!

Peng Chen
Peng Chen
4,955 Points

Problem solved! Thank you, Michael!