JAVA音乐库完整代码

import java.util.*; import java.text.DateFormat; import java.text.ParseException; import java.text.SimpleDateFormat; import java.lang.String; /** * Define a Java class to store information about music tracks. * * @author (JIAMING LI) * @version (25/10/2011) */ public class Track { // instance variables - define the information that need to stored in the track private String title; private Artist artist; private Date date; private int length; private int rating; private int size; private int playCount; private String location; private ArrayList<Artist> guestArtist; /** * Constructor for objects of class Tracks */ public Track(String title, Artist artist, int rating) { this(); this.title = title; this.artist = artist; if(rating >=0 && rating <=5) { this.rating = rating; } else { System.out.println("You enter the invaild number,try again"); } } public Track(String title, Artist artist, int rating, int length, int size) { this(title, artist, rating); this.length = length; this.size = size; } public Track() { // initialise instance variables length = 0; rating = 1; size = 0; location = "UK"; date = new Date(); guestArtist = new ArrayList<Artist>(); } /** * method - o set and get the title, artist, date, length, rating, location and sized of the track */ public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public Artist getArtist() { return artist; } public void setArtist(Artist artist) { this.artist = artist; } public Date getDate() { return date; } public void setDate(String s) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); try { this.date = sdf.parse(s); } catch(ParseException e) { e.printStackTrace(); } } public int getLength() { return length; } public void setLength(int length) { this.length = length; } public void setRating(int rating) { // put your code here if(rating >=0 && rating <=5) { this.rating = rating; } else { System.out.println("You enter the invaild number,try again"); } } public int getRating() { return rating; } public void setSize(int size) { this.size = size; } public int getSize() { return size; } public void setLocation(String location) { this.location = location; } public String getLocation() { return location; } /** * add a guest artist to the track */ public void addGuestArtist(Artist guest) { guestArtist.add(guest); } public ArrayList<Artist> getGuestArtist() { return guestArtist; } /** * get a list of all individuals on the track, including band members and guset artists. */ public ArrayList<Artist> getAllMembers() { ArrayList<Artist> allMembers = new ArrayList<Artist>(); allMembers = artist.getMembers(); if(guestArtist !=null) { allMembers.addAll(guestArtist); } return allMembers; } /** * add to the play count of a track */ public void play() { playCount++; } /** * get the play count of a track */ public int getPlayCount() { return playCount; } public String toString() { return "Track Title: " + title + ". \n" + "Artist: " + artist.getName() + ".\n" + "Length: " + length + ". \n" + "Date" + SimpleDateFormat.getDateInstance().format(date) + ". \n" + "Size " + size + ". \n" + "Location " + location + ". \n" + "Rating " + rating + ". \n" ; } static String artistName; public String toString2() { return "Track Title: " + title + ".\n" + artistName + ".\n" + "Date: " + DateFormat.getDateInstance().format(date) + ".\n" + "Length: " + length + ".\n" + "Rating: " + rating + ".\n" + "Location: " + location + ".\n" + "Size: " + size + ".\n"; } public static Track forUserEnter() { Scanner sc = new Scanner(System.in); System.out.println("Please enter the information of a Track"); Track track = new Track(); System.out.println("Title: "); String title = sc.next(); track.setTitle(title); System.out.println("Artist(Please enter the file name of artist)"); String artise = sc.next(); System.out.println("Date(yyyy-MM-dd): "); String date = sc.next(); track.setDate(date); System.out.println("Rating: "); int rating = sc.nextInt(); track.setRating(rating); System.out.println("Length: "); int length = sc.nextInt(); track.setLength(length); System.out.println("Size: "); int size = sc.nextInt(); track.setSize(size); System.out.println("Location: "); String location = sc.next(); track.setLocation(location); return track; } public static void main(String[] args) { Band bs = new Band("Back Street"); bs.addMembers(new Artist("12345")); bs.addMembers(new Artist("56789")); bs.addMembers(new Artist("23213")); bs.addMembers(new Artist("31313")); Track track = new Track("Season in the sun", bs, 5); track.addGuestArtist(new Artist("23132")); ArrayList<Artist> allMembers = track.getAllMembers(); System.out.println("All the individuals on the track "); for(Artist tem : allMembers) { System.out.println(tem.getName()); } track.play(); track.play(); System.out.println("THis song has been played for " + track); } }