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AP Computer Science A/Unit 9: Inheritance
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medium

Valid Method Calls with Inheritance

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Consider the following class definitions.

public class Parent {
    // constructor not shown
    public void funA() {
        /* implementation */
    }
    public void funB() {
        /* implementation */
    }
}

public class Child extends Parent {
    // constructor not shown
    public void funA() {
        /* different implementation */
    }
    public void funC() {
        /* implementation */
    }
}

Assume the following declarations have been made in a client class.

Parent p1 = new Parent();
Parent p2 = new Child();
Child p3 = new Child();

Which of the following method calls will compile without error?

I. p1.funC();

II. p2.funC();

III. p3.funB();

A

I and II only

B

III only

C

I only

D

II only

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