[Solved] Identify the error in the following code snippet:abstract class Vehicle { abstract void move(); } class Car extends Vehicle { void start() { System.out.println("Car started"); } } | Java

Java - Abstraction

Identify the error in the following code snippet:

abstract class Vehicle {
    abstract void move();
}

class Car extends Vehicle {
    void start() {
        System.out.println("Car started");
    }
}

ACar class must implement the move() method or be abstract.

BVehicle class cannot have abstract methods.

CCar class cannot have methods other than move().

DNo error, code is correct.

Step-by-Step Solution

Solution:

Step 1: Check abstract method implementation
Vehicle declares abstract method move(). Any concrete subclass must implement it or be declared abstract.
Step 2: Analyze Car class
Car does not implement move() and is not abstract, so this causes a compilation error.
Final Answer:
Car class must implement the move() method or be abstract. -> Option A
Quick Check:
Concrete subclass must implement all abstract methods [OK]

Quick Trick: Concrete subclass must implement all abstract methods [OK]

Common Mistakes:

Forgetting to implement abstract methods in subclass
Thinking abstract class can't have abstract methods
Believing subclass can skip abstract methods without being abstract

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More Java Quizzes

Identify the error in the following code snippet:

Step 1: Check abstract method implementation

Step 2: Analyze Car class

Final Answer:

Quick Check:

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