public class CD {
	private String title, artist;
	private double cost;
	private int tracks;
	
	public CD (String name, String musician, double price, int numTracks) {
		
	}
	
	public String toString() { // return title and artist
		
	}
}

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public class Inventory {
	private CD [] music;
	private int numCDs;
	
	public Inventory(int size) // size is initial size for array
        {
		
	}
	
	public int size () {
		
	}
	
	public void addCD (CD record) {
		
	}
	
	public void addCD (String name, String art, double p, int n) {
		
	}
	
	public void increaseCollection () // this function is given
         {
		
	}
	
	public String toString () {
		// returns names of all CD's
	}
}