Encapsulation->

Simcard->
serviceProvider(r/m)
simNumber(r)
balance(r/m)
type(r/m)

Instagram->
username(r)
password(r)
followers(r/m)
following(r/m)
noofposts(r)

Bank->
Accno(r)
ifsc(r)
Accholdername(r)
branch(r/m)
address(r/m)
mobno(r/m)

IceCream->
color(r)
type(r/m)
brand(r)
price(r/m)
flavour(r)