Java Cart ItemOfGroup java

package cart;

//ItemOfGroup - an item which always has sub-items,
//  such as itemOfStuffWSizeColor, used to group like items 
//  with varying attributes
//author - Lawrence Truett - FluffyCat.com
//date - August 11, 2003 - San Diego, CA
public class ItemOfGroup extends Item {
    long[] itemsInGroup;
    public ItemOfGroup(long keyIn, 
                       double priceIn, 
                       String descriptionIn,
                       ItemType typeIn, 
                       String smallGraphicIn, 
                       String largeGraphicIn, 
                       long[] itemsInGroupIn) {
        super(keyIn, 
              priceIn, 
              descriptionIn, 
              typeIn, 
              smallGraphicIn, 
              largeGraphicIn);
        this.setHasInventory(false);
        this.setIsCartable(false);
        this.setItemsInGroup(itemsInGroupIn);
    }
    
    public long[] getItemsInGroup() {return itemsInGroup;}
    private void setItemsInGroup(long[] itemsInGroupIn) {
        itemsInGroup = itemsInGroupIn;
    }
    
    public static String getItemClass() {return "Group Item";}    
}