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Java Java Data Structures - Retired Efficiency! Changing Course

A query I may pass this challenge but have a query

Can someone explain me this

Why course.getVideo() is used here

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;
import java.util.*;

public class QuickFix {

  public void addForgottenVideo(Course course) {
    List<Video> VideoList = course.getVideo();
    Video video = new Video("The Beginning Bits");
    VideoList.add(1, video);
    } 
    // TODO(1):  Create a new video called "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;
  }

}

1 Answer

Well, you want to add a video to the course, right? The getVideo() method gives you access to the course's current list of videos. This way the variable VideoList is now a reference to the course's list of videos.

Yup got it thanks Livia thanks