Question

CHANGE POSITION OF SONG Enter song's current position: Enter new position for song: "Peg" moved to position 3 JAMZ PLAYLIST MENU a - Add song r - Remove song c - Change position of song s - Output songs by specific artist t - Output total time of playlist (in seconds) o - Output full playlist q - Quit Choose an option: JAMZ - OUTPUT FULL PLAYLIST
1. Unique ID: JJ234 Song Name: All For You Artist Name: Janet Jackson Song Length (in seconds): 391
2. Unique ID: J345 Song Name: Canned Heat Artist Name: Jamiroquai Song Length (in seconds): 330
3. Unique ID: SD123 Song Name: Peg Artist Name: Steely Dan Song Length (in seconds): 237
4. Unique ID: JJ456 Song Name: Black Eagle Artist Name: Janet Jackson Song Length (in seconds): 197
5. Unique ID: SD567 Song Name: I Got The News Artist Name: Steely Dan Song Length (in seconds): 306

JAMZ PLAYLIST MENU a - Add song r - Remove song c - Change position of song s - Output songs by specific artist t - Output total time of playlist (in seconds) o - Output full playlist q - Quit Choose an option:

Answer 1

Answer:

Answers can be found below

Explanation:

port java.util.Scanner;

public class Playlist {

String title;

SongEntry head;

public Playlist(String title) {

this.title = title;

this.head = null;

}

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.println("Enter the playlist's title:");

String title = scanner.nextLine();

Playlist playList = new Playlist(title);

String option;

do {

option = playList.printMenu(scanner);

switch (option) {

case "a":

playList.addSong(scanner);

break;

case "d":

playList.removeSong(scanner);

break;

case "c":

playList.changePosition(scanner);

break;

case "s":

playList.outputSongByArtist(scanner);

break;

case "t":

playList.outpuTotalTime();

break;

case "o":

playList.outputFullPlayList();

break;

case "q":

System.out.println("QUIT");

break;

default:

System.out.println("please enter a valid option");

}

} while (!option.equals("q"));

}

public String printMenu(Scanner scanner) {

System.out.println(this.title + " PLAYLIST MENU");

System.out.println("a - Add song");

System.out.println("d - Remove song");

System.out.println("c - Change position of song");

System.out.println("s - Output songs by specific artist");

System.out.println("t - Output total time of playlist (in seconds)");

System.out.println("o - Output full playlist");

System.out.println("q - Quit");

System.out.println("Choose an option:");

String input = scanner.nextLine();

return input;

}

public void outputFullPlayList() {

if (head == null) {

System.out.println("Playlist is empty");

} else {

SongEntry tempNode = head;

while (tempNode != null) {

tempNode.printPlaylistSongs();

tempNode = tempNode.getNextNode();

}

}

}

public void addSong(Scanner scanner) {

System.out.println("ADD SONG");

System.out.println("Enter song's unique ID:");

String uniqueId = scanner.nextLine();

System.out.println("Enter song's name:");

String songName = scanner.nextLine();

System.out.println("Enter artist's name:");

String artistName = scanner.nextLine();

System.out.println("Enter song's length (in seconds):");

int length = Integer.parseInt(scanner.nextLine());

SongEntry song = new SongEntry(uniqueId, songName, artistName, length);

if (head == null) {

head = song;

} else {

SongEntry tempNode = head;

while (tempNode.getNextNode() != null) {

tempNode = tempNode.getNextNode();

}

tempNode.insertAfter(song);

}

}

public void removeSong(Scanner scanner) {

System.out.println("REMOVE SONG");

System.out.println("Enter song's unique ID:");

String uniqueId = scanner.nextLine();

SongEntry tempNode1 = head;

SongEntry tempNode2 = head;

while (tempNode1 != null) {

if (tempNode1.getUniqueID().equals(uniqueId)) {

if (tempNode1.getUniqueID().equals(head.getUniqueID())) {