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13,552 PointsI'm stuck in step 2 of this exercise!
Now I'd like to be able to get to the videos by their names, can you use the videosByTitle method to generate the proper map of title to video. We'll use it in the next step.
Where am I going wrong here? And what would be the proper way to correct it?
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;
}
}
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;
}
}
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 video = new Video("The Beginning Bits");
// TODO(2): Add the newly created video to the course videos as the second video.
course.getVideos().add(1, video);
}
public void fixVideoTitle(Course course, String oldTitle, String newTitle) {
}
public Map<String, Video> videosByTitle(Course course) {
for (Video video: course) {
return videosByTitle;
}
}
1 Answer
Manish Giri
16,266 PointsOkay, so if you look in the Course
class, you'll see that it has a List
of Video
objects. What the challenge wants you to do in that method is to loop through the list of videos using the course
object passed to the videosByTitle
method, and for each video in this list, you add to the Map
- the title of the video
, and the video
object itself.
After the for loop, you return the Map
itself.
The Course
class has a getter method that you can use to retrieve the list of video objects from the course
object, and the Video
class has a getter method to return the title
of the video object.
Give it a shot!