import java.util.Scanner;

import java.util.ArrayList;

import java.util.Collections;

public class Playlist $\{$

public static void printMenu$($String playlistTitle$)\{$

System.out.println$($playlistTitle $+$ "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"$)$;

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

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

$\}$

public static SongEntry executeMenu$($char option, String playlistTitle, SongEntry headNode, Scanner scnr$)\{$

SongEntry tailNode $=$ headNode;

if$($tailNode$!=$null$)\{$

while$($tailNode$.$getNext$()!=$null$)\{$

tailNode $=$ tailNode.getNext$()$;

$\}$

$\}$

if$($option $==\text{'}$a$\text{'})\{$

$//$ Perform "Add song"

scnr$.$nextLine$()$;

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

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

String uniqueID $=$ scnr$.$nextLine$()$;

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

String songName $=$ scnr$.$nextLine$()$;

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

String artistName $=$ scnr$.$nextLine$()$;

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

int songLength $=$ scnr$.$nextLine$()$;

SongEntry newSong $=$ new SongEntry$($uniqueID$,$ songName, artistName, songLength$)$;

if$($headNode $==$ null$)\{$

headNode $=$ newSong;

$\}$

else $\{$

tailNode.insertAfter$($newSong$)$;

tailNode $=$ tailNode.getNext$()$;

$\}$

$\}$

else if$($option $==\text{'}$d$\text{'})\{$

$//$ Perform "Remove song"

$\}$

else if$($option $==\text{'}$c$\text{'})\{$

$//$ Perform $"$ Change position of song"

$\}$

else if$($option $==\text{'}$s$\text{'})\{$

$//$ Output songs by specific artist

$\}$ else if$($option $==\text{'}$t$\text{'})\{$

$//$ "Output total time of playlist"

$\}$

else if$($option $==\text{'}$o$\text{'})\{$

$//"$o $-$ Output full playlist"

System.out.println$($playlistTitle $+"-$ OUTPUT FULL PLAYLIST"$)$;

if$($headNode $==$null$)\{$

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

System.out.println$("")$;

$\}$

else $\{$

int numNodes $=1$;

SongEntry currPrintNode $=$ headNode;

while$($currPrintNode$!=$null$)\{$

System.out.println$($numNode $+".")$;

currPrintNode.printPlaylistSongs$()$;

currPrintNode $=$ currPrintNode.getNext$()$;

numNodes$++$;

System.out.println$("")$;

$\}$

$\}$

return headNode;

$\}$

public static void main$($String$[]$ args$)\{$

Scanner scnr $=$ new Scanner$($System$.$in$)$;

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

String playlistTitle $=$ scnr$.$nextLine$()$;

System.out.println$("")$;

printMenu$($playlistTitle$)$;

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

char menuOption $=$ scnr$.$nextLine$().$charAt$(0)$;

SongEntry headNode $=$ null;

while$($menuOption$!=\text{'}$q$\text{'})\{$

if$($menuOption $==\text{'}$a$\text{'}||\text{'}$d$\text{'}||\text{'}$c$\text{'}||\text{'}$s$\text{'}||\text{'}$t$\text{'}||\text{'}$o$\text{'})\{$

headNode $=$ executeMenu$($menuOption$,$ playlistTitle, headNode, scnr$)$;

$\}$

else $\{$

System.out.println$("$Wrong menu selection"$)$;

$\}$

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

menuOption $=$ scnr$.$nextLine$().$charAt$(0)$;

$\}$

$\}$

$\}$

I$\text{'}$M GETTING AN ERROR THAT STATES "public static void main$($String$[]$ args$)\{"$ IS AN ILLEGAL START OF EXPRESSION. I WOULD LOVE IF SOMEONE COULD HELP ME FIX THAT. THANK YOU