public GSM(string gsmModel, string manufacturer, decimal? price, string owner, Battery battery, Display display)
{
if (gsmModel.Length < 0)
{
throw new ArgumentException();
}
else
{
this.gsmModel = gsmModel;
}
if (manufacturer.Length < 0)
{
throw new ArgumentException();
}
else
{
this.manufacturer = manufacturer;
}
if (price <= 0)
{
throw new ArgumentException();
}
else
{
this.price = price;
}
this.owner = owner;
this.Batter = battery;
this.Display = display;
}
public GSM(string gsmModel, string manufacturer, decimal? price, string owner, Battery battery)
: this(gsmModel, manufacturer, price, owner, battery, null)
{
}