Homework 03 - Object-oriented programming: Encapsulation/Inheritance/Polymorphism
Your homework:
Remove the initialization of attributes with default values in the Coffee Machine class.
Add two constructors to the Coffee Machine class.
One should only receive the name, and the other should receive the name, coffee type, and fill level.
Set the coffee type and fill level to sensible default values in the first constructor.
Restructure the creation of the coffee machines in the Canteen class so that the second constructor is used.
Pay attention to checking the values during the constructor call, potential null pointers, and the correct output of the program.
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00:00 Introduction
00:31 Current Status
01:06 Removing Initialization
01:18 Adding Constructors
02:08 Delegating Constructor Calls
02:43 Calling Constructors
03:34 Validation Testing
04:06 Preventing NullPointerExceptions
04:35 Final Result
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