Complete the missing code in the following classes class Hero private int pos: /*4.1 write the constructor*/ ________ _______ () { pos = 11: } class Fish private double wight: /*4.2 write setter for pos*/ _______ _______ setwight (________ w) { weight = w: } class Pen /*4.3 write 2 perperties of Pen: - color: could be "red", "green", "pink" .. etc ink: amount of left ink in percent, link 88, 10, 99, .. etc private _______ ______: private ______ length: class Account private double Balance: /*write deposite method*/ public void Deposite(_______ amount) { Balance = ______: }