I am trying to get to the videos by their names, i want you use the videosByTitl

Question

I am trying to get to the videos by their names, i want you use the videosByTitle() method to generate the proper map of title to video.. below is the code i have written and i have attched the other classes so you can understand it better. Please let me know what I am doing wrong and if you can help me, please comment so I understand . Thanks

import java.util.Map;
import java.util.HashMap;
import java.util.List;

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

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

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

       Map<String, Video> myHashMap = new HashMap <String, Video>();
       List<Video> video = course.getVideos();
       String key = course.getName();
       Video value = new Video(null);
   for ( int i = 0; i < course.getVideos().size(); i++){
for (Video newVideo : video){
               video.add(i, newVideo);
           }
        }
      
       myHashMap.put(key, value);
       myHashMap.get(key);
      
       return myHashMap;
  
   }
  
}

============================================================================================

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

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

}

=============================================================================================================

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;
}

}

Explanation / Answer

Here is the fixed code with comments inline. Hope it helps. Let me know if you have any doubts, by posting a comment. If happy with the answer , please don't forget to give a thumbs up :-). Thank you very much.

import java.util.Map;

import java.util.HashMap;

import java.util.List;

public class QuickFix {

public void addForgottenVideo(Course course) {

// TODO(1): Create a new video called "The Beginning Bits"

      List<Video> videos = course.getVideos();

      Video newVideo = new Video ("The Beginning Bits");

      videos.add(1, newVideo);

   }

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

       Map<String, Video> map = videosByTitle(course); // get the map of title to video

       Video video = map.get(oldTitle); //get the video corresponding to oldTitle

       if(video == null) // the oldTitle is not existing

           return false;

       else

       {

           video.setTitle(newTitle); //set the new title

           return true;

       }

   }

public Map<String, Video> videosByTitle(Course course) {

Map<String, Video> myHashMap = new HashMap <String, Video>();

//get the list of videos in this course object

List<Video> videos = course.getVideos();

Video video;

//iterate as many times as the size of the list of videos

for(int i = 0 ; i < videos.size(); i++)

{

   video = videos.get(i); //get the ith video in videos list

      myHashMap.put(video.getTitle(), video); //put the video object in map using its title as key

}

return myHashMap; //return the hashmap created

}

}

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