package com.insightfullogic.java8.examples.chapter1;

import java.util.ArrayList;
import java.util.List;

public abstract class MusicChapter {

	protected final List<Artist> artists;
	protected final List<Album> albums;

	public MusicChapter() {
		artists = new ArrayList<>();
		albums = new ArrayList<>();
		loadData("");
	}

	private void loadData(String file) {

	}
}

complete MusicChapter class