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Java Java Data Structures Exploring the Java Collection Framework ArrayLists

Naval Kulkarni
Naval Kulkarni
13,782 Points
Posted by Naval Kulkarni
Naval Kulkarni
13,782 Points

Can't find the links

Please tell what is wrong with this code.

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

  public String[] getWords() {
    return mBody.split("http");
  }

  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;
  }
}

1 Answer

KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points
KRIS NIKOLAISEN
KRIS NIKOLAISEN
54,967 Points

The challenge states all words that start with http should be considered links. You have used word equals http in your method. Try startsWith instead.

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

Also get words doesn't need to be changed. This:

public String[] getWords() {
    return mBody.split("http");
}

should be:

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