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Java Java Data Structures - Retired Efficiency! Changing Course

Jiten Mistry
Jiten Mistry
4,698 Points

Confused on TODO2:

Ive tried creating a new list of video objects and adding the newly created video, but the comment says add to second video. i think I'm misunderstanding what is being asked

com/example/model/Course.java
package com.example.model;

import java.util.List;

public class Course {
  private String mName;
  private List<Video> mVideos; 

  public Course(String name, List<Video> videos) {
    mName = name;
    mVideos = videos;
  }

  public String getName() {
    return mName;
  }

  public List<Video> getVideos() {
    return mVideos;
  }

}
com/example/model/Video.java
package com.example.model;

public class Video {
  private String mTitle;

  public Video(String title) {
    mTitle = title;
  }

  public String getTitle() {
    return mTitle;
  }

  public void setTitle(String title) {
    mTitle = title;
  }

}
QuickFix.java
import com.example.model.Course;
import com.example.model.Video;

import java.util.Map;

public class QuickFix {

  public void addForgottenVideo(Course course) {
    // TODO(1):  Create a new video called "The Beginning Bits"
      Video tbb = new Video("The Beginning Bits");
    // TODO(2):  Add the newly created video to the course videos as the second video.

  }

  public void fixVideoTitle(Course course, String oldTitle, String newTitle) {

  }

  public Map<String, Video> videosByTitle(Course course) {
    return null;
  }

}

2 Answers

Chris Howell
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Chris Howell
Python Web Development Techdegree Graduate 49,702 Points

I can see how you may have misread TODO 2.

I will see if rephrasing helps.

For TODO2 you are going to take the video you just created in TODO 1 and add it to the Course List of Videos. List doc But they want you to not JUST add it into the list they want you to place it in a specific spot in the List.

Remember a List has integer indexes that you can use to retrieve and add things with. HINT HINT.

Since addForgottenVideo takes a Course as a parameter, you can use the course variable to make your calls to retrieve your List of videos.

Jiten Mistry
Jiten Mistry
4,698 Points

Thank you again Chris, Rephrasing it, was all i needed. Much appreciated it!

Andrea Miotto
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Andrea Miotto
iOS Development Techdegree Graduate 23,357 Points
public void addForgottenVideo(Course course) {
    // TODO(1):  Create a new video called "The Beginning Bits"
      Video tbb = new Video("The Beginning Bits");
    // TODO(2):  Add the newly created video to the course videos as the second video.
    course.add(1, tbb); //add(int index, E element)
  }