[Solved] Examine the following code snippet:interface Runner { void run(); }class Athlete implements Runner { void run() { System.out.println("Athlete running"); }}What is the issue with this code? | Java

Java - Interfaces

Examine the following code snippet:

interface Runner { void run(); }
class Athlete implements Runner {
  void run() { System.out.println("Athlete running"); }
}

What is the issue with this code?

AThe method run() should return a value

BThe interface Runner cannot be implemented by Athlete

CThe run() method must be declared public in Athlete class

DThe class Athlete should be abstract

Step-by-Step Solution

Solution:

Step 1: Check interface method visibility
Methods in interfaces are implicitly public and abstract.
Step 2: Verify method implementation in class
When implementing interface methods, the method must be declared public to maintain visibility.
Step 3: Identify the error
The method run() in Athlete is package-private (default) and should be public.
Final Answer:
The run() method must be declared public in Athlete class -> Option C
Quick Check:
Interface methods must be public in implementing classes [OK]

Quick Trick: Interface methods must be public when implemented [OK]

Common Mistakes:

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