Скачать или смотреть 🔥 Can an interface extend a class in Java? | Java Trick Question

Can an interface extend a class in Java? 🤔

⚠️ The answer is No!

Interfaces define a contract (methods without implementation).

Classes are for implementation.

An interface can only extend other interfaces, never a class.

📌 Example:

class A {
void display() {
System.out.println("Class A");
}
}

// ❌ Not allowed
// interface B extends A {} // Compilation error

// ✅ Correct
interface X {}
interface Y extends X {} // Allowed

class Demo implements Y {}


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