Creating Abstract class instance

Question

IN ABSTRACT CLASS we can create instance through anobject : example given below (but there is no use just to know this giving you)

 

Any where people simply explaining we can create instane/object for abstract class , there is no explanation , but i found something just giving you can try and understance. 

public abstract class AbstractBankBalance
{
public abstract int ClosingBalance();
public abstract void showme();
}
public class sbi : AbstractBankBalance
{
public override int ClosingBalance()
{
return 1000;
}
public override void showme()
{
Console.WriteLine(this.GetType().Name.ToUpper());
}
}
public class icci : AbstractBankBalance
{
public override int ClosingBalance()
{
return 2000;
}
public override void showme()
{
Console.WriteLine(this.GetType().Name.ToUpper());
}
}
IN CONSOLE APPLICATION JUST COPY AND PAST AND RUN WILL WORK,
static void Main(string[] args)
{
AbstractBankBalance[] bankarray = new AbstractBankBalance[2];
bankarray[0] = new sbi();
bankarray[1] = new icci();
foreach (var item in bankarray)
{
Console.WriteLine("ABSTRACT CLASS SAME BUT THROUGH A OBJECT THAT IS ARRAY " + item.ClosingBalance());
item.showme();
}
Console.ReadKey();
}
}