[Solved] Identify the error in this code snippet:interface A { void display(); } interface B { void display();... | Java

Java - Interfaces

Identify the error in this code snippet:

interface A { void display(); } 
interface B { void display(); } 
class C implements A, B { } 
public class Test { 
  public static void main(String[] args) { 
    C obj = new C(); 
    obj.display(); 
  } 
}

AClass C should extend interfaces, not implement.

BClass C must implement the display() method.

CInterfaces cannot have methods with the same name.

DNo error, code runs fine.

Step-by-Step Solution

Solution:

Step 1: Check interface method requirements
Interfaces A and B declare abstract method display().
Step 2: Verify class C implementation
Class C does not implement display(), so it must be declared abstract or implement the method.
Final Answer:
Class C must implement the display() method. -> Option B
Quick Check:
Implement all interface methods = C [OK]

Quick Trick: Implement all interface methods or declare class abstract [OK]

Common Mistakes:

Assuming interfaces cannot share method names
Forgetting to implement interface methods
Using 'extends' instead of 'implements' for interfaces

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More Java Quizzes

Identify the error in this code snippet:

Step 1: Check interface method requirements

Step 2: Verify class C implementation

Final Answer:

Quick Check:

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