Thread: Dont know whats happening

Hello, i am trying to create a program that prints out a stock list.

These are my classes.

package ca1;
 
public abstract class Store 
{
 
	private static int partCode;
	private static String description;
	private static String binNum;
	private static int qtyInStock;
	private static int reOrderPoint;
	private static int maxNum;
 
	public Store(int partCode, String description, String binNum, int qtyInStock, int reOrderPoint, int maxNum)
	{
		Store.setPartCode(partCode);
		Store.setDescription(description);
		Store.setBinNum(binNum);
		Store.setQtyInStock(qtyInStock);
		Store.setReOrderPoint(reOrderPoint);
		Store.setMaxNum(maxNum);	
	}
 
	public static void setPartCode(int partCode) 
	{
		Store.partCode = partCode;
	}
 
	public static int getPartCode() 
	{
		return partCode;
	}
 
	public static void setDescription(String description) 
	{
		Store.description = description;
	}
 
	public static String getDescription() 
	{
		return description;
	}
 
	public static void setBinNum(String binNum) 
	{
		Store.binNum = binNum;
	}
 
	public static String getBinNum() 
	{
		return binNum;
	}
 
	public static void setReOrderPoint(int reOrderPoint)
	{
		Store.reOrderPoint = reOrderPoint;
	}
 
	public static int getReOrderPoint() 
	{
		return reOrderPoint;
	}
 
	public static void setQtyInStock(int qtyInStock) 
	{
		Store.qtyInStock = qtyInStock;
	}
 
	public static int getQtyInStock() 
	{
		return qtyInStock;
	}
 
	public static void setMaxNum(int maxNum) 
	{
		Store.maxNum = maxNum;
	}
 
	public static int getMaxNum() 
	{
		return maxNum;
	}
}
 
 
 
 
public abstract class Food extends Store
{
 
	private static String expiryDate;
 
	public Food(int partCode, String description, String binNum, int qtyInStock, int reOrderPoint, int maxNum, String expiryDate) 
	{
		super(partCode, description, binNum, qtyInStock, reOrderPoint, maxNum);
		Food.expiryDate = expiryDate;
	}
 
	public static void setExpiryDate(String expiryDate) 
	{
		Food.expiryDate = expiryDate;
	}
 
	public static String getExpiryDate() 
	{
		return expiryDate;
	}
 
}
 
 
public class CheddarCheese extends Food 
{
 
	public CheddarCheese(int partCode, String description, String binNum, int qtyInStock, int reOrderPoint, int maxNum, String expiryDate) 
	{
		super(partCode, description, binNum, qtyInStock, reOrderPoint, maxNum, expiryDate);
	}
}
 
 
public class DanishBlueCheese extends Food
{
 
	public DanishBlueCheese(int partCode, String description, String binNum, int qtyInStock, int reOrderPoint, int maxNum, String expiryDate) 
	{
		super(partCode, description, binNum, qtyInStock, reOrderPoint, maxNum, expiryDate);
	}
}
 
 
public class StockList
{
 
	public static void printDetails()
	{
		System.out.println("Stock List");
		System.out.println("Part Code" + "	Description" + "		Quantity In Stock");
		System.out.println(CheddarCheese.getPartCode() + "		" + CheddarCheese.getDescription() + "		" + CheddarCheese.getQtyInStock());
		System.out.println(DanishBlueCheese.getPartCode() + "		" + DanishBlueCheese.getDescription() + "		" + DanishBlueCheese.getQtyInStock());
	}
}
 
 
public class TestStore 
{
	public static void main(String[] args) 
	{
 
		Food CheddarCheese = new CheddarCheese(324, "Cheddar Cheese", "5c", 15, 10, 20, "01/11/2009");
		Food DanishBlueCheese = new DanishBlueCheese(396, "Danish Blue Cheese", "6c", 8, 8, 10, "03/11/2009");
 
		StockList.printDetails();
	}
 
}

This is the output.

Stock List
Part Code Description Quantity In Stock
396 Danish Blue Cheese 8
396 Danish Blue Cheese 8

Can anyone tell me why it is outputting the same thing twice?
I am a beginner programmer so i would appreciate if you could make it as basic as i have it.

Jason.