Understanding java's protected modifier

Question

I have a class called A in package1 and another class called C in package2. Class C extends class A.

A has an instance variable which is declared like this:

<

Answer 1

Within the same package where the protected member is declared, access is permitted:

package package1;

public class C extends A{
    public void go(){
        A a = new A();
        System.out.println(a.protectedInt);  // got printed 
        C c = new C();
        System.out.println(c.protectedInt);  // got printed as well
    }
}

Outside the package where the protected member is declared, access is permitted if and only if by code that is responsible for the implementation of that object. In this case, C is responsible for the implementation of that object, so it could access the protected.

package package2;

public class C extends A{
    public void go(){
        A a = new A();
        System.out.println(a.protectedInt);  // compiler complains  
        C c = new C();
        System.out.println(c.protectedInt);  // got printed
    }
}