Creating Superclasses and Subclasses

AP Computer Science A· difficulty 2/5

public class Parent {
    protected int x = 5;
}
public class Child extends Parent {
    public int doubleX() { return x * 2; }
}
// Usage:
Child c = new Child();
System.out.print(c.doubleX());

What is printed?

A
$0$
B
$Compile error: x is private$
C
$5$
D
$10$
check_circle

Explanation

x is protected, so Child can access it directly. x = 5, so doubleX() returns 10.

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