Consider the following code snippet:

public static  void print(E[] a) { for (int i = 0; i < a.length; i++) { System.out.println(a[i] + " "); } } int[] a = {3,6,5,7,8,9,2,3}; print(makeArray(a));

Assume that the method call to print(makeArray(a)) works correctly by printing the int array a. Which of the following headers for the makeArray method will make this possible?

I public static Integer[] makeArray(int[] a)

II public static E[] makeArray(int[] a)

III public static Integer[] makeArray(E[] a)

I and III only

I only

I and II only

II and III only

What does it mean when the syntax ? extends D is used?

Any subclass of D may be used.

Any superclass of D may be used.

Any subclass or superclass of D may be used.

This indicates a wildcard with an upper bound.

Consider the following code snippet that declares the GraduateStudent class:

public GraduateStudent extends Student { . . .}

Which of these statements are false?

I GraduateStudent is a subclass of Student

II Stack is a subclass of Stack

III Stack is a subclass of Stack

II only

III only

II and III only

I only

Which of the following necessitates the type erasure process?

I The Java virtual machine does not work with generic types

II To maintain backward compatibility to older versions of Java

III Generics do not work with primitives

I only

I and II only

II only

I and III only

Which of the following are restrictions of Java generic programming?

I You cannot use the assignment operator = to assign one generic object to another.

II You cannot use the == operator to compare two generic objects.

III You cannot construct arrays of generic types.

II only

I and III only

I only

III only