Compile-time error: B must implement f or be abstract A non-abstract subclass must implement all inherited abstract methods.

Compile-time error: B must implement f or be abstract

Compiles, B inherits abstract f

Overriding Methods

AP Computer Science A· difficulty 3/5

public abstract class A {
    public abstract void f();
}
public class B extends A { }

What is the result?

Explanation

A non-abstract subclass must implement all inherited abstract methods.

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