Java Access Specifier issue

package MyPack;
public class Bank 
{
	protected double bal;
	protected String name;

	public Bank(String s, double ba){
		name=s;
		bal=ba;
	}

	protected void show(){
		System.out.println("The name of the Customer is " + name + " " + "and the balance is "+bal);
	}
}

package YourPack;
class BankBal extends MyPack.Bank
{
	public static void main(String[] args) 
	{
		Bank b = new Bank("NDragger",25);
		b.show();
	}
}

BankBal.java:2: error: constructor Bank in class Bank cannot be applied to given
 types;
class BankBal extends MyPack.Bank
^
  required: String,double
  found: no arguments
  reason: actual and formal argument lists differ in length
BankBal.java:6: error: cannot find symbol
                Bank b = new Bank("NDragger",25);
                ^
  symbol:   class Bank
  location: class BankBal
BankBal.java:6: error: cannot find symbol
                Bank b = new Bank("NDragger",25);
                             ^
  symbol:   class Bank
  location: class BankBal
3 errors