Java: Basic Modeling

Why use constructors in classes?

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Java: Basic Modeling

How should you decide if data belongs in 'Product', 'CartItem', or 'Customer'?

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Java: Basic Modeling

How does encapsulation improve a basic product model?

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Java: Access Modifiers and Visibility

Why is it important to keep class fields private?

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Java: Access Modifiers and Visibility

How does immutability enhance encapsulation?

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Java: Abstract Classes

How do abstract classes enforce a contract for subclasses?

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Java: Access Modifiers and Visibility

Why does accessor methods in encapsulation matter in this design?

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Java: Abstract Classes

When might using an interface be preferable over an abstract class?

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Java: Access Modifiers and Visibility

Which access modifier in Java is the default in Java?

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Java: Access Modifiers and Visibility

Why is 'private' the most restrictive access modifier?

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