For the questions below, use the following partial class definitions:
public class A1
{
public int x;
private int y;
protected int z;
...
}
public class A2 extends A1
{
protected int a;
private int b;
...
}
public class A3 extends A2
{
private int q;
...
}
-Which of the following lists of instance data are accessible in class A2?
A) x, y, z, a, b
B) x, y, z, a
C) x, z, a, b
D) z, a, b
E) a, b

Question

For the questions below, use the following partial class definitions:
 public class A1
 {
 public int x;
 private int y;
 protected int z;
 ...
 }
 public class A2 extends A1
 {
 protected int a;
 private int b;
 ...
 }
 public class A3 extends A2
 {
 private int q;
 ...
 }
-Which of the following lists of instance data are accessible in class A2?
A) x, y, z, a, b
B) x, y, z, a
C) x, z, a, b
D) z, a, b
E) a, b

Quizplus · Accepted Answer

C) Class A2 has access to all of its own instance data (a, b) and any instance data from A1 that were protected (z). Further, all classes, including A2, have access to A1's x since it is public, so x, z, a and b are accessible in A2.

For the Questions Below, Use the Following Partial Class Definitions