Claude
c5c435ae20
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b5DfjBGLBr7F5km2AN
37 lines
1.2 KiB
Plaintext
37 lines
1.2 KiB
Plaintext
=== Q10 The four pillars of OOP ===
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Circle area = 3.14
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Rectangle area = 6.00
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rejected: amount must be positive, balance still 500.0
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=== Q11 Inheritance and constructor chaining ===
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Animal constructor
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Dog constructor
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Animal constructor
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Puppy constructor for Bruno
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=== Q12 Method overloading vs overriding ===
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FancyPrinter.show(Object)
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show(String)
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FancyPrinter.show(Object)
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=== Q13 Abstract class vs interface ===
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Scooter has 2 wheels, charging, plug Type 2
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=== Q14 Polymorphism: what is and is not dynamic ===
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Child.who() | Parent.field | Parent.static | Child.static
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=== Q15 Can you override static, private or final methods? ===
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Base.secret | Base.locked
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=== Q16 How do you create an immutable class? ===
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members: [Asha, Ravi]
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add blocked: UnsupportedOperationException
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=== Q17 Composition vs inheritance (is-a vs has-a) ===
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stack = [99, 1, 2], pop gives 2
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=== Q18 Access modifiers ===
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a -> public
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b -> protected
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c -> (package-private)
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d -> private
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=== Q19 Object class methods: toString, equals, hashCode ===
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default toString looks like ClassName@hex: true
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p1.equals(p2) = true
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set contains an equal point: false
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=== Q20 Constructors: default, chained and private ===
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default config: dev:8080
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same Registry instance: true
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