Which of the following is the correct way to declare a subclass King that extends a base Piece class in a typical object-oriented design?

easy📝 Conceptual Q12 of 15

LLD - Design — Chess Game

Which of the following is the correct way to declare a subclass King that extends a base Piece class in a typical object-oriented design?

Aclass King extends Piece { constructor(position) { super(position); } }

Bfunction King() { this.position = position; } extends Piece

Cclass King inherits Piece { constructor() { } }

DKing = Piece + position

Step-by-Step Solution

Solution:

Step 1: Identify correct subclass syntax
In modern OOP, a subclass uses extends keyword and calls super() in constructor.
Step 2: Check each option
class King extends Piece { constructor(position) { super(position); } } uses correct syntax: class King extends Piece { constructor(position) { super(position); } }.
Final Answer:
class King extends Piece { constructor(position) { super(position); } } -> Option A
Quick Check:
Subclass syntax = extends + super() [OK]

Quick Trick: Subclass uses extends and calls super() in constructor [OK]

Common Mistakes:

Master "Design — Chess Game" in LLD

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More LLD Quizzes