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David Moody
19,302 PointsNeed Help With Logic Behind This Challenge
I cannot quite figure out with this challenge the logic behind how to add the video to the courses. The compiler keeps telling me that I am mix-matching types. How do I get a video added to the list of videos without mixmatching types?
Should I do course = new Course(title, video)? How do I think about where the video is supposed to go so that I can map it out and insert the video correctly?
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.ArrayList;
import java.util.List;
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.
}
public void fixVideoTitle(Course course, String oldTitle, String newTitle) {
}
public Map<String, Video> videosByTitle(Course course) {
return null;
}
}
1 Answer
Daniel Vargas
29,184 PointsHello,
You should create a List<Video> and then call the getVideos method from Course.java, after that just add the new Video to the List:
import com.example.model.Course;
import com.example.model.Video;
import java.util.Map;
import java.util.List;
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.
List<Video> listOfVideos=course.getVideos();
listOfVideos.add(1,video);
}
public void fixVideoTitle(Course course, String oldTitle, String newTitle) {
}
public Map<String, Video> videosByTitle(Course course) {
return null;
}
}
I hope this can help you.