Q: How do I keep track of which ArrayList element belongs to which element in a JTable for when I later have to put it all together into one single ArrayList?
DETAILED:
I have an interface Media, and 3 classes implementing it: Book, Movie, Album. Album has an ArrayList of Songs(also a class I made, obviously).
I made a JTable as per usual with Object[][] where I can put in Strings, ints and such for the time being and the user can add rows, remove rows, edit the cells, and then later I planned on going through the data and making each thing specified in the JTable and putting them into an ArrayList called ListOne of type Media so I can use ObjectOutputStream and save the List(yes, this is a demand in the assignment, I would've kept it simple personally).
But the problem is Songs are an ArrayList in the class Album, and so I made another JFrame with a JTable where one can similarly fill that one out, and then I thought I would store all of the songs the user provides into a temporary Album-object. But where do I go from here? I can't keep track of them like this if the user deletes the corresponding Album in the first JTable.
If I store these Albums in an ArrayList called ListTwo, and if the user decides to delete no.6 in ListOne, and no.6 happens to be an Album, I have to know which one to delete in ListTwo now and make sure the others' ID or key isn't affected as a result because I will need to pair them properly later. I need to know which Album's songs in ListTwo to transfer to which of the Albums in ListOne so I can save it later.
So how would I go about keeping track of this and connecting them later?
Preliminary code:
Media interface class:
public interface Media {
void setAuthor(String author);
String getAuthor();
}
Book class:
public class Book implements Media {
private String author;
Book(){
this.author = "";
}
@Override
public void setAuthor(String author) {
this.author = author;
}
@Override
public String getAuthor() {
return this.author;
}
}
CD(Album) class:
import java.util.ArrayList;
public class CD implements Media {
public class Song {
private int seconds;
private String songName;
private String artist;
Song(String name, int seconds, String artist){
this.songName = name;
this.seconds = seconds;
this.artist = artist;
}
public String getName(){
return this.songName;
}
public void setName(String name){
this.songName = name;
}
}
private ArrayList<Song> songs;
private String artist;
CD(){
songs = new ArrayList<Song>();
this.artist = "";
}
public void addSong(String name, int seconds, String artist){
this.songs.add(new Song(name, seconds, artist));
}
public void removeSong(int position){
this.songs.remove(position);
}
@Override
public void setAuthor(String author){
this.artist = author;
}
@Override
public String getAuthor(){
return this.artist;
}
}
Movie class:
public class Movie implements Media {
private String producer;
Movie(){
this.producer = "";
}
@Override
public void setAuthor(String author){
this.producer = author;
}
@Override
public String getAuthor(){
return this.producer;
}
}
TABLE: http://pastebin.com/ETJGuQhD
