import java.util.*;
 
public class Cdartist extends Compactdisk
{
 private String artist; // artist performing on cd
 
 // Artist constructor
 public Cdartist()
 {
 artist = "";
 }
 
 // set value
 public void setCdArtist(String cdArtist)
 	{ 
 	artist = cdArtist;
	}
 
	// return value
	public String getCdArtist()
	{
	return (artist);
	}
 
 
} //End Class

import java.util.*;

public class Inventory 
{// begin class Inventory

 public static int maxlength = 0;
  public static Compactdisk[] sort(Compactdisk[] cds)
   { 
	Arrays.sort(cds, 0, maxlength); 
	return cds;
	}
	
 public static String toString(Compactdisk[] cds)
  { 
  	String toSend = "\n\n"; 
	
	for(int i = 0; i < maxlength; i ++)
	toSend = toSend + cds[i].getName() + "\n";
	return toSend;
  } 
  
  public static void main(String[] args)
  {//begin method main
  
   // create cd Array 
	Compactdisk[] cds = new Compactdisk[100];
	
	cds[0] = new Compactdisk(); 
	float totalValue = 0; 
	
	Scanner input = new Scanner(System.in); // create scanner 
	
	// begin display method 
	System.out.print("Enter up to 99 CD Names or STOP to Exit: "); 
	String nameInput = input.nextLine(); //read cd name 
	
	maxlength ++; 
	
	 for(int i = 1; i < cds.length && !nameInput.equalsIgnoreCase("STOP"); i++)
	 {// begin main While
	  cds[i] = new Compactdisk();
	  cds[i].setName(nameInput);
	  
	  System.out.print("Enter CD Artist Name: "); // prompt for artist name
	 // input=new Scanner(System.in); 
	  cds[i].setCdArtist(input.nextLine()); // artist name input from user
	  
	  
	  System.out.print("Enter Price of this CD: "); // prompt for price
	  cds[i].setPrice(input.nextFloat()); // price input from user. 
	  while (cds[i].getPrice()<= 0) 
	 	{// begin while 
	   	System.out.print("Price Must Be Greater Than Zero. Enter Price: ");
			cds[i].setPrice(input.nextFloat()); // cd price loop from user.
	  	} // End while 
	  
	  System.out.print("Enter CD Item Number: "); // prompt for cd item number
	  cds[i].setItemno(input.nextInt()); // cds item number input from user 
	  
	  System.out.print("Enter Number of these CDs in Stock: "); // prompt for cd stock 
	  cds[i].setNstock(input.nextInt()); // cds in stock input from user
	  
	  System.out.print("\n\nCD "+cds[i].getName()+", Item Number "+cds[i].getItemno()+","); // display name 
	  System.out.printf(" is worth %c%.2f.",'$', + cds[i].getPrice());//
	  System.out.print("\nWe have "+ cds[i].getNstock()+" copies in stock,");
	  System.out.printf(" making our inventory for this cd worth %c%.2f.\n", '$', + cds[i].getValue()); //inventory value 
	 
	  if(cds[i].getValue() != -1) totalValue = totalValue + cds[i].getValue();
	  System.out.printf("Combined Inventory for all CDs is Worth %c%.2f.\n\n\n", '$', + totalValue);
	  
	  System.out.print("Enter up to 99 CD Names or STOP to Exit: "); 
	  input=new Scanner(System.in); // internal loop prompt 
	  nameInput = input.nextLine(); //name input from user 
	  
	  maxlength ++; 
	  } // End main While
	  
	   //System.out.println(toString(cds));
		System.out.println(toString(sort(cds))); 
		System.out.print("Ending Program."); 

   }// end method main 
} // end class Payroll

Compactdisk cd = new Compactdisk();

public class CdArtist extends Compactdisk
{
Artist person;
public CdArtist(Artist in)
{
person=in;
}
//however you're adding artists
 
public Artist getArtist()
{return person;}
}

CdArtist CDwArtists=new CdArtist();

Compactdisk CDwArtists = new CdArtist();

public CdArtist(Artist in, String nameIn)
{
super.name=nameIn;
person=in;
}