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Start your free trialPatrick Koch
40,496 PointsCan't add Video to created List
Hello,
I Watched the List video and checked the our Karaoke code, but I cant figure out whats wrong, Compiler is telling me about a runtime error.
I put notes in the code, for my thoughts.
thanks
g patrick
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;
import java.util.List;
import java.util.ArrayList;
public class QuickFix {
public void addForgottenVideo(Course course) {
// TODO(1): Create a new video called "The Beginning Bits"
Video forgottenVideo = new Video("The Beginning Bits");
// TODO(2): Add the newly created video to the course videos as the second video.
//create List
List<Video> completedList = new ArrayList<Video>();
//add created Video to list (0 based, so 1)
completedList.add(1, forgottenVideo);
}
public void fixVideoTitle(Course course, String oldTitle, String newTitle) {
}
public Map<String, Video> videosByTitle(Course course) {
return null;
}
}
2 Answers
Dan Johnson
40,533 PointsSince you're trying to update a list that already exists you'll want to grab the reference to it instead of creating a new list.
// Get the list from the course.
List<Video> completedList = course.getVideos();
Patrick Koch
40,496 PointsThanks Dan,
afterwards its so obvious!
thanks again, Patrick