2. Classes & Objects (13. Object-oriented programming)

Код Cart class: https://github.com/AndriiPiatakha/learnit_java_core/blob/master/src/com/itbulls/learnit/javacore/oop/classes/Cart.java Код Demo class: https://github.com/AndriiPiatakha/learnit_java_core/blob/master/src/com/itbulls/learnit/javacore/oop/classes/Demo.java Код Product class: https://github.com/AndriiPiatakha/learnit_java_core/blob/master/src/com/itbulls/learnit/javacore/oop/classes/Product.java