Exemple de classe senzilla
Font: Ruby Essetntials
Exemple 1
require  'colorize'
class BankAccount
   def accountNumber
        @accountNumber = "12345"
   end
   def accountName
        @accountName = "John Smith"
   end
   def initialize ()
   end
   def test_method
     puts "------------------------------".colorize(:light_red)
     puts "The class is working"
     puts accountNumber.colorize(:light_yellow)
     puts "Nom de la persona: " + accountName.colorize(:light_blue)
     puts "-----------------------------".colorize(:light_red)
   end
end
# Construeix objecte
a = BankAccount.new()
# Imprimeix objecte
a.test_method
print `date`.colorize(:light_red)