JAVA: How to Hardcode an array into an arrayList

i am trying to create an ArrayList of product, i have three types of product:

ProductLine(mainClass), PerishableProductLine(extends ProductLine), ItemisedProductLine(extends ProductLine).

ProductLine Class

Fields: Product Code, recRetPrice, Sale Price, Quantity.

PerishableProductLine Class Fields: Days to Expiry

ItemisedProductLine Class

Fields: String[] Serial Numbers

I am trying to hard code the product in the Inventory Class but i don't know how to insert an array into an ArrayList as one of the parameter, String [] Serial Numbers;

public Inventory()
{
    products = new ArrayList<ProductLine>();
    products.add(new ProductLine("A0001", 10.90, 9.90, 100, "N/A"));
    products.add(new ProductLine("B0010", 12.00, 7.50, 125, "5"));
    products.add(new ProductLine("C0100", 3.00, 2.30, 1000, "16"));
    products.add(new ItemisedProductLine("D1000", 2600, 2490, 2, Arrays.asList("a b d", "e f g h", "i j k l"))));
    products.add(new ProductLine("E0001", 699, 509, 3, Arrays.asList(new serialNumbers("CCCC333333"),new serialNumbers("DDDD444444"), new serialNumber("AAAA222222"))));
}

As you can see in line 7 and 8 i tried to hard code the array as suggested in other similar questions on Stack Overflow but it does not compile.

The errors are generic(stuff like "missing ';' or expecting ')'...")don't know if this can help, I hope i described well the scenario.

ProductLine class

public class ProductLine
{
private String productCode;      // Format X9999
private double recRetPrice;
private double salePrice;
private int    quantity;
private String description;

public ProductLine(String productCode, double recRetPrice, double salePrice, int quantity, String description)
{
    this.productCode = productCode;
    this.recRetPrice = recRetPrice;
    this.salePrice   = salePrice;
    this.quantity    = quantity;
    this.description = description;
}

public  void sold(int no){

}

public String getProductCode(){
    return productCode;
}

public double getPrice(){
    return salePrice;
}

/*public String getSerialNumber(){
    return ItemisedProductLine.serialNumbers;
}*/ //Does not compile

}

ItemisedProductLine

public class ItemisedProductLine extends ProductLine
{
public static String[] serialNumbers;

public ItemisedProductLine(String productCode, double recRetPrice, double salePrice, int quantity, String[] SerialNumber){
    super( productCode,  recRetPrice,  salePrice,  quantity,  description);
    this.serialNumbers = serialNumbers;
}    
public void sold(int no){}

}