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Java: equals and hashCode in Collections

How do hashCode collisions affect HashMap performance?

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Java: equals and hashCode in Collections

What happens if two unequal objects have the same hashCode?

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Java: equals and hashCode in Collections

Why are equals and hashCode important in Java collections?

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Java: equals and hashCode in Collections

What happens if equals and hashCode are inconsistent?

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Java: equals and hashCode in Collections

Why avoid mutable fields in equals and hashCode?

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Java: equals and hashCode in Collections

How do hash-based collections use hashCode?

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Java: equals and hashCode in Collections

What if you only override equals without hashCode?

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Java: Default Methods and Multiple Inheritance Rules

How are default methods declared in Java interfaces?

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Java: equals and hashCode in Collections

Why is hashCode critical for performance in large collections?

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Java: Default Methods and Multiple Inheritance Rules

How would you explain a design consequence of using default methods in interfaces in an interview?

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